{"id":53322,"date":"2026-10-13T21:03:55","date_gmt":"2026-10-13T21:03:55","guid":{"rendered":"https:\/\/blogadmin.vpsvc.com\/hub\/?p=53322"},"modified":"2026-10-14T14:48:21","modified_gmt":"2026-10-14T14:48:21","slug":"mailer-box-size","status":"publish","type":"post","link":"https:\/\/blogadmin.vpsvc.com\/hub\/mailer-box-size\/","title":{"rendered":"A definitive guide to mailer box sizes: Choosing, comparing &amp; customizing"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Choosing the right mailer box size helps protect your products and keeps you from paying to ship unnecessary space. Too much room means extra filler and more movement inside, while too little leaves products squeezed against the walls. The aim is a comfortable fit for everything you\u2019re sending, including the packaging that keeps it safe.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">This guide explains standard mailer box dimensions, how to measure correctly and where size can affect shipping costs. You\u2019ll also learn how to turn a well-fitting box into a branded delivery, with customizable packaging from VistaPrint.<\/p>\n\n\n\n<section style=\"background-color: #FFFFFF\" class=\"section section-vp-custom-tip\">\n    <div class=\"vp-custom-tip swan section__container\" role=\"alert\">\n        <div class=\"swan-px-8 swan-py-7 swan-display-flex span-justify-center tip-wrap\">\n            <div class=\"title swan-text-x2large swan-font-secondary\">\n                Key takeaways            <\/div>\n            <div class=\"text\">\n                <ul>\n<li>Measure your products with their padding and inserts, then check internal dimensions for fit and external dimensions for shipping.<\/li>\n<li>Use size charts to shortlist options, but test the complete package before ordering in bulk.<\/li>\n<li>Choose your box around its contents, then use the lid, sides and interior to bring your branding to life.<\/li>\n<\/ul>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/section>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<section style=\"background-color: #FFFFFF\" class=\"section section-vp-custom-design-cta-block\">\n    <div class=\"vp-custom-design-cta-block swan swan-custom-cta-block px-6 swan-py-4 section__container\" role=\"alert\">\n        <div class=\"swan-px-8 swan-py-3 swan-display-flex span-justify-center\">\n            <div class=\"swan-mr-4\">\n                <div class=\"swan-text-x3large swan-text-black swan-font-secondary swan-mb-5\">\n                    Ready to find your fit?                <\/div>\n\n                <div class=\"swan-text-black swan-text-xm1 text-description\">\n                    Explore custom mailer boxes and start planning your packaging.                <\/div>\n            <\/div>\n\n                            <div class=\"vp-custom-design-cta-block-button\">\n                    \n<a href=\"https:\/\/www.vistaprint.com\/packaging\/shipping-supplies\/mailer-boxes\"\n   title=\"Get started!\"\n   target=\"_blank\"\n   class=\"swan-button swan-button-skin-primary\"\n    data-tracking-event=\"Navigation Clicked\" data-tracking-event-detail=\"\/hub\/wp-json\/wp\/v2\/posts\/53322;https:\/\/www.vistaprint.com\/packaging\/shipping-supplies\/mailer-boxes;Content:Text Link;Get started!\" data-tracking-navigation-detail=\"Get started!\">\n    Get started!<\/a>\n                <\/div>\n                                <\/div>\n    <\/div>\n<\/section>\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img width=\"1024\" height=\"768\" data-public-id=\"ideas-and-advice-prod\/blogadmin\/branded-mailer-box\/branded-mailer-box.png\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/res.cloudinary.com\/vistaprint\/images\/w_1024,h_768,c_scale\/f_auto,q_auto\/v1791924754\/ideas-and-advice-prod\/blogadmin\/branded-mailer-box\/branded-mailer-box.png?_i=AA\" alt=\"A branded mailer box containing sunglasses and a t-shirt\" class=\"wp-post-53322 wp-image-53323\" data-format=\"png\" data-transformations=\"f_auto,q_auto\" data-version=\"1791924754\" data-seo=\"1\" data-responsive=\"1\" srcset=\"https:\/\/res.cloudinary.com\/vistaprint\/images\/w_1024,h_768,c_scale\/f_auto,q_auto\/v1791924754\/ideas-and-advice-prod\/blogadmin\/branded-mailer-box\/branded-mailer-box.png?_i=AA 1024w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_848,h_636,c_scale\/f_auto,q_auto\/v1791924754\/ideas-and-advice-prod\/blogadmin\/branded-mailer-box\/branded-mailer-box.png?_i=AA 848w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_648,h_486,c_scale\/f_auto,q_auto\/v1791924754\/ideas-and-advice-prod\/blogadmin\/branded-mailer-box\/branded-mailer-box.png?_i=AA 648w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_448,h_336,c_scale\/f_auto,q_auto\/v1791924754\/ideas-and-advice-prod\/blogadmin\/branded-mailer-box\/branded-mailer-box.png?_i=AA 448w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_248,h_186,c_scale\/f_auto,q_auto\/v1791924754\/ideas-and-advice-prod\/blogadmin\/branded-mailer-box\/branded-mailer-box.png?_i=AA 248w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Standard mailer box dimensions and common size breakdown<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Common <a href=\"https:\/\/www.vistaprint.com\/packaging\/mailer-boxes\" target=\"_blank\" rel=\"noopener\">mailer box<\/a> sizes include 8&#8243; \u00d7 6&#8243; \u00d7 3&#8243; and 9&#8243; \u00d7 6&#8243; \u00d7 4&#8243;, but there\u2019s no universal standard or single size that suits every business. \u201cSmall,\u201d \u201cmedium\u201d and \u201clarge\u201d are helpful groupings, rather than fixed industry specifications.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dimensions are usually written as <strong>length \u00d7 width \u00d7 depth<\/strong>, with depth also called height. Always check the supplier\u2019s measurement order and whether the figures describe the inside or outside.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The table below uses selected VistaPrint US sizes, so you can compare available options. All measurements are internal, in inches and the suggested uses are starting points, subject to your product and padding measurements.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Size group<\/th><th>Internal dimensions (L \u00d7 W \u00d7 D)<\/th><th>Products to consider<\/th><\/tr><\/thead><tbody><tr><td>Small<\/td><td>6&#8243; \u00d7 4&#8243; \u00d7 3&#8243;<\/td><td>Small accessories, beauty products or individually boxed jewelry<\/td><\/tr><tr><td>Medium<\/td><td>8&#8243; \u00d7 6&#8243; \u00d7 3&#8243;<\/td><td>Stationery, small books or compact gift sets<\/td><\/tr><tr><td>Medium<\/td><td>9&#8243; \u00d7 6&#8243; \u00d7 4&#8243;<\/td><td>Accessory bundles or skincare sets with fitted inserts<\/td><\/tr><tr><td>Medium<\/td><td>9.5&#8243; \u00d7 7.75&#8243; \u00d7 4&#8243;<\/td><td>Coffee bags or small specialty-food bundles<\/td><\/tr><tr><td>Large, shallow<\/td><td>12&#8243; \u00d7 9&#8243; \u00d7 2&#8243;<\/td><td>Folded lightweight apparel or flat textile products<\/td><\/tr><tr><td>Large, deeper<\/td><td>12&#8243; \u00d7 10&#8243; \u00d7 4&#8243;<\/td><td>Clothing bundles or multi-item subscription orders<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Note that the two 4-inch-deep medium options have different footprints. That extra length and width could accommodate a wider product arrangement, but it won\u2019t give you more height. When comparing boxes, check each measurement individually. A box with more overall volume can still be too narrow for your product, and a shallow garment box won\u2019t necessarily accommodate a bulky sweater.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Internal vs. external dimensions: How to measure accurately<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Internal dimensions describe the usable space inside a box. External dimensions describe its outside size, which carriers use when calculating shipping charges.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">To measure an assembled mailer, take the length along the longer inside edge of the base, the width along the shorter edge and the depth from the inside bottom to the closing height. Don\u2019t include the open lid.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img width=\"1200\" height=\"800\" data-public-id=\"ideas-and-advice-prod\/blogadmin\/placeholder\/placeholder.png\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/res.cloudinary.com\/vistaprint\/images\/w_1200,h_800,c_scale\/f_auto,q_auto\/v1721633938\/ideas-and-advice-prod\/blogadmin\/placeholder\/placeholder.png?_i=AA\" alt=\"\" class=\"wp-post-53322 wp-image-19731\" data-format=\"png\" data-transformations=\"f_auto,q_auto\" data-version=\"1721633938\" data-seo=\"1\" data-responsive=\"1\" srcset=\"https:\/\/res.cloudinary.com\/vistaprint\/images\/w_1200,h_800,c_scale\/f_auto,q_auto\/v1721633938\/ideas-and-advice-prod\/blogadmin\/placeholder\/placeholder.png?_i=AA 1200w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_1048,h_698,c_scale\/f_auto,q_auto\/v1721633938\/ideas-and-advice-prod\/blogadmin\/placeholder\/placeholder.png?_i=AA 1048w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_848,h_565,c_scale\/f_auto,q_auto\/v1721633938\/ideas-and-advice-prod\/blogadmin\/placeholder\/placeholder.png?_i=AA 848w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_648,h_432,c_scale\/f_auto,q_auto\/v1721633938\/ideas-and-advice-prod\/blogadmin\/placeholder\/placeholder.png?_i=AA 648w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_448,h_298,c_scale\/f_auto,q_auto\/v1721633938\/ideas-and-advice-prod\/blogadmin\/placeholder\/placeholder.png?_i=AA 448w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_248,h_165,c_scale\/f_auto,q_auto\/v1721633938\/ideas-and-advice-prod\/blogadmin\/placeholder\/placeholder.png?_i=AA 248w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\">[IMG: link to image<br>Alt text: An open mailer showing length, width and depth, with internal and external measurements]<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For a new packaging order, work through these steps:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>Arrange your products as they\u2019ll ship.<\/strong> Measure the longest, widest and tallest points of the whole arrangement, including retail packaging, protruding caps or handles.<\/li>\n\n\n\n<li><strong>Allow for protection on every side.<\/strong> A 0.25- to 0.5-inch allowance per side can be a starting point for lightweight, non-fragile items, but it isn\u2019t a universal cushioning requirement. Glass, ceramics and other breakables need a protection plan that\u2019s suited to the product.<\/li>\n\n\n\n<li><strong>Measure your inserts, too.<\/strong> Use the full outer dimensions of a fitted insert, including its base and walls. If you\u2019ve already measured a fully wrapped product, don\u2019t add the same padding allowance again.<\/li>\n\n\n\n<li><strong>Test the assembled package.<\/strong> The lid should close without pressure or bulging, and the contents should stay secure. Measure the closed box at its widest external points and weigh everything together before getting a shipping quote.<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">For example, a non-fragile item measuring 7&#8243; \u00d7 5&#8243; \u00d7 2&#8243; with a planned 0.5-inch allowance on every side needs <strong>8&#8243; \u00d7 6&#8243; \u00d7 3&#8243; of internal space<\/strong>. That allowance adds 1 inch to each overall dimension because there are two opposing sides.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Don\u2019t convert internal dimensions to external ones using a fixed addition. Board thickness, folded panels and the closure all affect the finished size, so use the supplier\u2019s specifications and confirm with a sample.<\/p>\n\n\n\n<section style=\"background-color: #FFFFFF\" class=\"section section-vp-custom-tip\">\n    <div class=\"vp-custom-tip swan section__container\" role=\"alert\">\n        <div class=\"swan-px-8 swan-py-7 swan-display-flex span-justify-center tip-wrap\">\n            <div class=\"title swan-text-x2large swan-font-secondary\">\n                Tip            <\/div>\n            <div class=\"text\">\n                <p>Tissue can improve presentation, but it doesn\u2019t replace protective cushioning. Keep the package secure and easy to open using these <a href=\"https:\/\/www.vistaprint.com\/hub\/frustration-free-packaging\" target=\"_blank\" rel=\"noopener\">frustration-free packaging principles<\/a>.<\/p>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/section>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img width=\"1024\" height=\"1024\" data-public-id=\"ideas-and-advice-prod\/blogadmin\/cardboard-shipping-box-with-branded-tape\/cardboard-shipping-box-with-branded-tape.png\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/res.cloudinary.com\/vistaprint\/images\/w_1024,h_1024,c_fill,g_auto\/f_auto,q_auto\/v1791924827\/ideas-and-advice-prod\/blogadmin\/cardboard-shipping-box-with-branded-tape\/cardboard-shipping-box-with-branded-tape.png?_i=AA\" alt=\"A cardboard shipping box with branded green and pink tape\" class=\"wp-post-53322 wp-image-53324\" data-format=\"png\" data-transformations=\"f_auto,q_auto\" data-version=\"1791924827\" data-seo=\"1\" data-responsive=\"1\" srcset=\"https:\/\/res.cloudinary.com\/vistaprint\/images\/w_1024,h_1024,c_fill,g_auto\/f_auto,q_auto\/v1791924827\/ideas-and-advice-prod\/blogadmin\/cardboard-shipping-box-with-branded-tape\/cardboard-shipping-box-with-branded-tape.png?_i=AA 1024w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_848,h_848,c_fill,g_auto\/f_auto,q_auto\/v1791924827\/ideas-and-advice-prod\/blogadmin\/cardboard-shipping-box-with-branded-tape\/cardboard-shipping-box-with-branded-tape.png?_i=AA 848w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_648,h_648,c_fill,g_auto\/f_auto,q_auto\/v1791924827\/ideas-and-advice-prod\/blogadmin\/cardboard-shipping-box-with-branded-tape\/cardboard-shipping-box-with-branded-tape.png?_i=AA 648w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_448,h_448,c_fill,g_auto\/f_auto,q_auto\/v1791924827\/ideas-and-advice-prod\/blogadmin\/cardboard-shipping-box-with-branded-tape\/cardboard-shipping-box-with-branded-tape.png?_i=AA 448w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_248,h_248,c_fill,g_auto\/f_auto,q_auto\/v1791924827\/ideas-and-advice-prod\/blogadmin\/cardboard-shipping-box-with-branded-tape\/cardboard-shipping-box-with-branded-tape.png?_i=AA 248w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Carrier guidelines, dimensional weight and material strength<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Shipping charges can depend on both a package\u2019s weight and the space it occupies. Dimensional weight, often called DIM weight, converts that space into a billing weight:<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>DIM weight in pounds = external length \u00d7 width \u00d7 height in inches \u00f7 the carrier\u2019s divisor.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When DIM pricing applies, carriers generally compare it with actual weight and charge using the higher figure. The rules differ by carrier and service:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Carrier<\/th><th>What to check<\/th><\/tr><\/thead><tbody><tr><td>USPS<\/td><td>Ground Advantage applies DIM pricing to packages over 1 cubic foot, or 1,728 cubic inches. Its divisor is 139, following the July 2026 change.<\/td><\/tr><tr><td>FedEx<\/td><td>Published US package guidance uses a divisor of 139. Check the rules for your chosen service and account.<\/td><\/tr><tr><td>UPS<\/td><td>Published guidance lists 139 for Daily Rates and 166 for Retail Rates. Your applicable rate type matters.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Follow the carrier\u2019s current dimension-rounding instructions before multiplying, then round the calculated DIM weight up to a whole pound.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Here\u2019s why a small size change matters. Using hypothetical <strong>external<\/strong> dimensions and a divisor of 139, a 10&#8243; \u00d7 8&#8243; \u00d7 4&#8243; package has a DIM weight of 3 pounds after rounding. Increase each dimension by 2 inches to 12&#8243; \u00d7 10&#8243; \u00d7 6&#8243;, and that becomes 6 pounds. If the packed order weighs 2 pounds, that\u2019s a change from 3 to 6 billable pounds where these DIM rules apply. Neither example exceeds USPS Ground Advantage\u2019s volume threshold.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The cheapest option still needs sufficient strength. Edge crush testing (ECT) measures a board\u2019s resistance to edgewise compression, while burst testing measures resistance to pressure through its surface. Neither rating alone guarantees a finished box\u2019s payload capacity.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">VistaPrint lists 1\/16-inch E-flute cardboard with a 32 ECT rating for its mailers \u2013 this doesn\u2019t mean a 32-pound weight allowance. For heavy or fragile orders, confirm the packaging\u2019s suitability and test the complete pack, as size alone can\u2019t tell you how much it will safely carry.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img width=\"1024\" height=\"1024\" data-public-id=\"ideas-and-advice-prod\/blogadmin\/cardboard-shipping-box-with-patterned-tape\/cardboard-shipping-box-with-patterned-tape.png\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/res.cloudinary.com\/vistaprint\/images\/w_1024,h_1024,c_fill,g_auto\/f_auto,q_auto\/v1791924868\/ideas-and-advice-prod\/blogadmin\/cardboard-shipping-box-with-patterned-tape\/cardboard-shipping-box-with-patterned-tape.png?_i=AA\" alt=\"Someone holding a cardboard shipping box with patterned tape\" class=\"wp-post-53322 wp-image-53325\" data-format=\"png\" data-transformations=\"f_auto,q_auto\" data-version=\"1791924868\" data-seo=\"1\" data-responsive=\"1\" srcset=\"https:\/\/res.cloudinary.com\/vistaprint\/images\/w_1024,h_1024,c_fill,g_auto\/f_auto,q_auto\/v1791924868\/ideas-and-advice-prod\/blogadmin\/cardboard-shipping-box-with-patterned-tape\/cardboard-shipping-box-with-patterned-tape.png?_i=AA 1024w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_848,h_848,c_fill,g_auto\/f_auto,q_auto\/v1791924868\/ideas-and-advice-prod\/blogadmin\/cardboard-shipping-box-with-patterned-tape\/cardboard-shipping-box-with-patterned-tape.png?_i=AA 848w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_648,h_648,c_fill,g_auto\/f_auto,q_auto\/v1791924868\/ideas-and-advice-prod\/blogadmin\/cardboard-shipping-box-with-patterned-tape\/cardboard-shipping-box-with-patterned-tape.png?_i=AA 648w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_448,h_448,c_fill,g_auto\/f_auto,q_auto\/v1791924868\/ideas-and-advice-prod\/blogadmin\/cardboard-shipping-box-with-patterned-tape\/cardboard-shipping-box-with-patterned-tape.png?_i=AA 448w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_248,h_248,c_fill,g_auto\/f_auto,q_auto\/v1791924868\/ideas-and-advice-prod\/blogadmin\/cardboard-shipping-box-with-patterned-tape\/cardboard-shipping-box-with-patterned-tape.png?_i=AA 248w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Selecting the best mailer box sizes for specific product types<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The best mailer box sizes for small products depend on shape, fragility and how many items travel together. Start with a sample order from your range, then build the packaging around it.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Apparel and textiles<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Consider a shallow 12&#8243; \u00d7 9&#8243; \u00d7 2&#8243; format for lightweight folded garments. Measure the final fold with tissue or a belly band in place, and move to a deeper option if closing the lid compresses the contents.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Coffee and specialty food<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">A 9.5&#8243; \u00d7 7.75&#8243; \u00d7 4&#8243; format is worth testing for coffee bags, but check filled bags rather than empty packaging. Sealed tops and gussets need room, and a bag may need to lie flat. Jars require their own cushioning allowance, so don\u2019t assume the same box works for both.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img width=\"1024\" height=\"768\" data-public-id=\"ideas-and-advice-prod\/blogadmin\/colorful-mailer-box-full-of-cookies\/colorful-mailer-box-full-of-cookies.png\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/res.cloudinary.com\/vistaprint\/images\/w_1024,h_768,c_scale\/f_auto,q_auto\/v1791924902\/ideas-and-advice-prod\/blogadmin\/colorful-mailer-box-full-of-cookies\/colorful-mailer-box-full-of-cookies.png?_i=AA\" alt=\"A colorful mailer box full of cookies\" class=\"wp-post-53322 wp-image-53326\" data-format=\"png\" data-transformations=\"f_auto,q_auto\" data-version=\"1791924902\" data-seo=\"1\" data-responsive=\"1\" srcset=\"https:\/\/res.cloudinary.com\/vistaprint\/images\/w_1024,h_768,c_scale\/f_auto,q_auto\/v1791924902\/ideas-and-advice-prod\/blogadmin\/colorful-mailer-box-full-of-cookies\/colorful-mailer-box-full-of-cookies.png?_i=AA 1024w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_848,h_636,c_scale\/f_auto,q_auto\/v1791924902\/ideas-and-advice-prod\/blogadmin\/colorful-mailer-box-full-of-cookies\/colorful-mailer-box-full-of-cookies.png?_i=AA 848w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_648,h_486,c_scale\/f_auto,q_auto\/v1791924902\/ideas-and-advice-prod\/blogadmin\/colorful-mailer-box-full-of-cookies\/colorful-mailer-box-full-of-cookies.png?_i=AA 648w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_448,h_336,c_scale\/f_auto,q_auto\/v1791924902\/ideas-and-advice-prod\/blogadmin\/colorful-mailer-box-full-of-cookies\/colorful-mailer-box-full-of-cookies.png?_i=AA 448w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_248,h_186,c_scale\/f_auto,q_auto\/v1791924902\/ideas-and-advice-prod\/blogadmin\/colorful-mailer-box-full-of-cookies\/colorful-mailer-box-full-of-cookies.png?_i=AA 248w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Cosmetics and artisan products<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Start by comparing a compact 6&#8243; \u00d7 4&#8243; \u00d7 3&#8243; format with the larger options in the chart. For bottles, candles or ceramics, measure the protective arrangement first. Decorative filler alone won\u2019t necessarily prevent breakage.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Using inserts and wrapping<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Inserts don\u2019t automatically mean moving up one size category. A fitted insert might work within your existing box, while a thicker protective system could need substantially more room. Measure the finished arrangement instead of guessing.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">For holiday bundles, repeat the fit check with gift wrap, cards and promotional extras included. Keeping a second size for seasonal orders may be more practical than shipping everyday orders in a larger box.<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full\"><img width=\"1024\" height=\"1024\" data-public-id=\"ideas-and-advice-prod\/blogadmin\/purple-mailer-box-containing-jewelry\/purple-mailer-box-containing-jewelry.png\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/res.cloudinary.com\/vistaprint\/images\/w_1024,h_1024,c_fill,g_auto\/f_auto,q_auto\/v1791924927\/ideas-and-advice-prod\/blogadmin\/purple-mailer-box-containing-jewelry\/purple-mailer-box-containing-jewelry.png?_i=AA\" alt=\"A purple mailer box containing jewelry with protective padding\" class=\"wp-post-53322 wp-image-53327\" data-format=\"png\" data-transformations=\"f_auto,q_auto\" data-version=\"1791924927\" data-seo=\"1\" data-responsive=\"1\" srcset=\"https:\/\/res.cloudinary.com\/vistaprint\/images\/w_1024,h_1024,c_fill,g_auto\/f_auto,q_auto\/v1791924927\/ideas-and-advice-prod\/blogadmin\/purple-mailer-box-containing-jewelry\/purple-mailer-box-containing-jewelry.png?_i=AA 1024w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_848,h_848,c_fill,g_auto\/f_auto,q_auto\/v1791924927\/ideas-and-advice-prod\/blogadmin\/purple-mailer-box-containing-jewelry\/purple-mailer-box-containing-jewelry.png?_i=AA 848w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_648,h_648,c_fill,g_auto\/f_auto,q_auto\/v1791924927\/ideas-and-advice-prod\/blogadmin\/purple-mailer-box-containing-jewelry\/purple-mailer-box-containing-jewelry.png?_i=AA 648w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_448,h_448,c_fill,g_auto\/f_auto,q_auto\/v1791924927\/ideas-and-advice-prod\/blogadmin\/purple-mailer-box-containing-jewelry\/purple-mailer-box-containing-jewelry.png?_i=AA 448w, https:\/\/res.cloudinary.com\/vistaprint\/images\/w_248,h_248,c_fill,g_auto\/f_auto,q_auto\/v1791924927\/ideas-and-advice-prod\/blogadmin\/purple-mailer-box-containing-jewelry\/purple-mailer-box-containing-jewelry.png?_i=AA 248w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n<\/div>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Custom mailer box sizes vs standard dimensions<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">When comparing custom mailer box sizes vs standard dimensions, separate custom sizing from custom printing. A standard-size box can carry a distinctive design without being manufactured to bespoke measurements.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Standard sizes simplify repeat orders, while custom dimensions may help unusual products fit more closely. Custom dimensions are also useful for reducing unused space, but they can involve additional set-up costs, higher minimum quantities or longer production times, so compare supplier quotes and <a href=\"https:\/\/www.vistaprint.com\/hub\/packaging-design-cost\" target=\"_blank\" rel=\"noopener\">packaging design costs<\/a> before committing.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Choose the fit first, then plan your artwork. A shallow, wide lid can suit a large illustration, while a compact lid benefits from a clear logo and shorter wording. Leave room for the shipping label, keep important text away from folds and use the interior for a thank-you message or product-care advice.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">VistaPrint offers inside, outside or both-side printing on its available mailer sizes. Use the template for your chosen dimensions, explore these <a href=\"https:\/\/www.vistaprint.com\/hub\/box-design-ideas\" target=\"_blank\" rel=\"noopener\">box design ideas<\/a> and follow the <a href=\"https:\/\/www.vistaprint.com\/hub\/mailer-box-design\" target=\"_blank\" rel=\"noopener\">mailer box design guide<\/a> to prepare your layout.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Find your fit before you print<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The right mailer box size starts with a fully packed product and ends with a real-world fit check. Measure the contents, allow for protection and compare the closed package\u2019s dimensions and weight using your chosen carrier\u2019s quote tool.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Before ordering in bulk, test a sample with your usual contents and check how the design looks once the box is folded. This will leave you with a clearer picture of the cost, the protection and the experience your customer receives.<\/p>\n\n\n\n<section style=\"background-color: #FFFFFF\" class=\"section section-vp-custom-design-cta-block\">\n    <div class=\"vp-custom-design-cta-block swan swan-custom-cta-block px-6 swan-py-4 section__container\" role=\"alert\">\n        <div class=\"swan-px-8 swan-py-3 swan-display-flex span-justify-center\">\n            <div class=\"swan-mr-4\">\n                <div class=\"swan-text-x3large swan-text-black swan-font-secondary swan-mb-5\">\n                    Ready to create packaging that fits your product and brand?                <\/div>\n\n                <div class=\"swan-text-black swan-text-xm1 text-description\">\n                    Explore VistaPrint custom mailer boxes.                <\/div>\n            <\/div>\n\n                            <div class=\"vp-custom-design-cta-block-button\">\n                    \n<a href=\"https:\/\/www.vistaprint.com\/packaging\/shipping-supplies\/mailer-boxes\"\n   title=\"Let&#039;s go\"\n   target=\"_blank\"\n   class=\"swan-button swan-button-skin-primary\"\n    data-tracking-event=\"Navigation Clicked\" data-tracking-event-detail=\"\/hub\/wp-json\/wp\/v2\/posts\/53322;https:\/\/www.vistaprint.com\/packaging\/shipping-supplies\/mailer-boxes;Content:Text Link;Let&#039;s go\" data-tracking-navigation-detail=\"Let&#039;s go\">\n    Let&#039;s go<\/a>\n                <\/div>\n                                <\/div>\n    <\/div>\n<\/section>\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">FAQs about mailer box sizes<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">What is the most common mailer box size?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">There\u2019s no single established most-common size, but options such as 8&#8243; \u00d7 6&#8243; \u00d7 3&#8243; and 9&#8243; \u00d7 6&#8243; \u00d7 4&#8243; are useful starting points for smaller orders.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How do I choose a mailer box size?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Measure your products with their padding and inserts, then choose internal dimensions that accommodate the complete arrangement without squeezing it or leaving unnecessary space.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">What are standard shipping box sizes?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Shipping boxes come in many supplier-defined sizes, rather than one universal standard. Compare length, width and height, and check whether the measurements are internal or external.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">How do you measure a mailer box?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Measure its assembled interior: length along the longer base edge, width along the shorter edge and depth from the bottom to the closing height.<\/p>\n\n\n\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Choosing the right mailer box size helps protect your products and keeps you from paying to ship unnecessary space. Too [&hellip;]<\/p>\n","protected":false},"author":220,"featured_media":53329,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_titles_title":"Mailer box size guide & dimensions | VistaPrint US","_seopress_titles_desc":"Find the right mailer box size for your products. Compare dimensions, measure for padding and understand how box size affects shipping costs.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"mailer box size","_cloudinary_featured_overwrite":false,"editor_notices":[],"footnotes":""},"categories":[3,20750],"tags":[],"class_list":["post-53322","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-marketing-advertising","category-test-ruth"],"acf":{"vp_publishing_settings_post_modified":false},"_links":{"self":[{"href":"https:\/\/blogadmin.vpsvc.com\/hub\/wp-json\/wp\/v2\/posts\/53322","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogadmin.vpsvc.com\/hub\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogadmin.vpsvc.com\/hub\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogadmin.vpsvc.com\/hub\/wp-json\/wp\/v2\/users\/220"}],"replies":[{"embeddable":true,"href":"https:\/\/blogadmin.vpsvc.com\/hub\/wp-json\/wp\/v2\/comments?post=53322"}],"version-history":[{"count":5,"href":"https:\/\/blogadmin.vpsvc.com\/hub\/wp-json\/wp\/v2\/posts\/53322\/revisions"}],"predecessor-version":[{"id":53333,"href":"https:\/\/blogadmin.vpsvc.com\/hub\/wp-json\/wp\/v2\/posts\/53322\/revisions\/53333"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blogadmin.vpsvc.com\/hub\/wp-json\/wp\/v2\/media\/53329"}],"wp:attachment":[{"href":"https:\/\/blogadmin.vpsvc.com\/hub\/wp-json\/wp\/v2\/media?parent=53322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogadmin.vpsvc.com\/hub\/wp-json\/wp\/v2\/categories?post=53322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogadmin.vpsvc.com\/hub\/wp-json\/wp\/v2\/tags?post=53322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}