Flat Mailing Boxes
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Flat mailing boxes offer a general-purpose, low-profile carton for documents, apparel, and flat retail goods, with flexible closures and print options.
$0.94
UNLIMITED CUSTOMIZATION OPTIONS
A printing technique employing a plate to transfer designs onto paper. Ideal for extensive print jobs.
Plate-free digital printing transfers designs electronically, cost-effective for short runs.
Screen printing is a method using a mesh screen and stencil to transfer ink onto a substrate.
Quick-drying printing technique utilizing ultraviolet lights for ink curing, yielding a glossy finish.
Consisting of water-based pigments, Ensures top-notch color output with a 100% eco-friendly profile.
Fluorescent inks are vibrant, UV-reactive pigments that emit vivid colors under ultraviolet light.
Generate pure colors using specific ink formulas to consistently & precisely reproduce color in printing.
Produce metallic colors through precise ink formulations to replicate color in printing.
Premium bleached white paperboard, specially coated on one side to enhance printing & finishing.
Bleached white paperboard, coated on both sides to achieve superior printing quality and finishes.
Top-notch textured paper, perfect for adding a touch of style when wrapping up durable boxes.
A unique paper material showcasing a shiny or matte metallic laminated surface.
Bleached kraft paper crafted from a blend of new and recycled pulp, coated on both sides for optimal printing.
Kraft paper produced from a combination of new and recycled paper pulp, with coating on both sides for printing purposes.
Kraft paper dyed black, manufactured from a blend of new and recycled pulp, and coated on both sides for printing applications.
Crafted from recycled grey chipboard cardboard, also known as uncoated recycled paperboard, ideal for luxury rigid boxes.
Unique paper material showcasing a holographic laminated surface in either glossy or matte finish.
Grey chipboard, one-sided white cardboard with a smooth, printable surface, ideal for luxury rigid boxes.
Gloss lamination enhances visual appeal by applying a shiny finish, and protecting printed materials.
Matte lamination offers a non-reflective finish, providing elegant appearance to printed materials.
Made with a smooth lamination that feels like touching a peach, can choose between a satin or matte.
A UV coating is applied to a specific area and then cured using ultraviolet light to make it sturdy.
A transparent coating is applied using the CMYK printing technique, and it comes in gloss, satin, or matte.
A fast-drying coating that undergoes curing through ultraviolet light is offered in both gloss and matte.
In a printing method, dies are pressed onto the back of the material to create a raised motif.
A printing technique that involves pressing dies onto the front of the material to create a raised motif.
In foil relief printing, foil is transferred at high temperatures, often employing multiple colors.
Craft a die-cut shape with a plastic film layer, revealing a window to showcase the product inside.
We recommend the ideal material and add-ons like lamination, foiling, embossing UV, etc.
Get Free Design Support with your box 3d Renders or Send Your Design File for Printing.
Upon design approval, we’ll print and conduct quality checks before shipping the boxes to you.
Technical Specifications
| Dimensions | Available in Custom Sizes |
| Printing | CMYK, Pantone Color, Full Color & No Printing |
| Paper Stock | Eco-Friendly Kraft, Corrugated Cardboard & Premium Rigid Stock |
| Coating | Semi-Gloss AQ, Gloss UV, Matte UV & Spot UV |
| Default Process | Die Cutting, Gluing, Scoring, Perforating |
| Custom Options | Window Cut Out, Gold/Silver Foiling, Embossing, Raised Ink |
| Proof | Digital Proof, 3D Mock-Up |
| Shipping | Shipped FLAT (Free Shipping Across USA & Canada) |
| Help | For further inquiries and Quotes, contact us or email at sales@cratpackaging.com |
Flat mailing boxes give businesses a general-purpose, low-profile carton for sending documents, apparel, and flat retail goods through the mail, sized and printed to fit whatever a brand ships most.
Flat Mailing Boxes Specifications
| Box Style | Low-profile tuck-top, lock-bottom, or wrap-style mailing carton |
| Material | Corrugated or SBS paperboard, kraft or white liner |
| Assembly | Ships flat, folds and assembles by hand |
| Best For | General business, retail, and personal mailing of flat items |
| Print Options | Full-color CMYK, one-color kraft print, or plain unprinted |
| Order Volume/MOQ | Low minimums for small businesses, bulk pricing at scale |
| Shipping | Flat-packed cartons ship nationwide from US facilities |
A General-Purpose Mailing Format
Not every shipment needs a tape-free, self-locking closure built for one specific product type; this format covers a broader range of closures and structures for documents, retail goods, and general business mail.
Common Uses
Offices mailing documents and contracts, retailers shipping flat merchandise, and businesses sending promotional mailers all use this general-purpose format for its flexible sizing and closure options.
Eco-Friendly Options
A 2025 McKinsey survey found that over 60% of U.S. consumers pick green packaging when they have the choice, and recyclable corrugated and SBS paperboard options are available in this mailing format.
Closure and Print Options
Tuck-top, lock-bottom, and wrap-style closures are all available depending on how the box will be handled, and printing ranges from plain unprinted kraft to full-color CMYK branding.
Choosing the Right Size
Sizing is matched to the specific documents or products being mailed, keeping shipping costs down by avoiding wasted space while still protecting contents during transit.
How This Compares to Flat Mailer Boxes
Our Flat Mailer Boxes are built specifically around a self-locking, tape-free closure for e-commerce shipping, while this general mailing format covers a wider range of closures and use cases beyond e-commerce alone.
Why Order From Crat Packaging
- Direct manufacturing with no middleman markup
- Flexible sizing for documents, retail goods, and more
- Options from plain kraft to full-color branding
- US-based production and support
- Free design proof before any print run
- Low minimums for small businesses
How to Order
- Share your box size, quantity, and use case
- Review a free digital proof if branding is needed
- Approve artwork and confirm timeline
- Receive flat-packed cartons ready to fold and ship
Frequently Asked Questions
What is typically shipped in these boxes?
Documents, contracts, flat retail merchandise, and general business or promotional mailers are all common uses.
How is this different from Flat Mailer Boxes?
Our Flat Mailer Boxes use a self-locking, tape-free closure built for e-commerce; this format covers a broader range of closures and general mailing uses.
Can I get these unprinted?
Yes, plain unprinted kraft is available alongside one-color and full-color print options.
What closure types are available?
Tuck-top, lock-bottom, and wrap-style closures are all available depending on your needs.
What is the minimum order quantity?
Low minimums are available for small businesses, with better pricing at production scale.
Are recyclable materials available?
Yes, recyclable corrugated and SBS paperboard options are both available.
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