Flat Pack Boxes for Posting
Great
366 reviews on
Trustpilot
Flat pack boxes for posting that store flat and fold into sturdy postal-ready mailers in seconds for home and small-business use.
$0.74
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 |
Mailing a gift or a small parcel from home shouldn’t require a trip to buy a box. Crat Packaging’s flat pack boxes for posting store flat in a drawer or closet and fold into a sturdy mailer in seconds, giving individuals and home-office sellers a ready supply for everyday post.
Flat Pack Boxes for Posting Specifications
| Box Style | Tuck-top or auto-lock mailer, postal-friendly proportions |
| Material | E-flute corrugated or heavy kraft board |
| Assembly | Folds flat to shape by hand, no tape needed to close |
| Best For | Personal mail, small gifts, home-office parcels |
| Print Options | Plain kraft, single-color, or full custom branding |
| Order Volume/MOQ | Small packs for individuals to bulk cases for sellers |
| Shipping | Compact flat bundles, easy to store and reorder |
Built for the Home Mailing Desk
Not everyone mailing a package works out of a warehouse. Etsy sellers, small studios, and anyone shipping gifts from home need a box that doesn’t demand storage space they don’t have. A stack of flat blanks tucks into a closet shelf until it’s needed.
Postal-Ready Sizing
We size these boxes to common postal service dimensions, so what you fold together fits standard mailing rates without oversized-parcel surcharges catching you off guard.
Who Relies on This Format
Home-based sellers, gift-givers, small studios, and anyone mailing personal parcels use flat pack posting boxes to avoid buying pre-built boxes in bulk they may never fully use before moving or changing suppliers.
Simple, No-Tools Folding
Fold along the scored lines, engage the locking tabs, and the box holds its shape without glue or a tape gun. It takes less time than addressing the label.
A Greener Way to Mail
Recyclable kraft and corrugated stock keep these boxes easy to dispose of responsibly, and a 2025 McKinsey survey found that over 60% of U.S. consumers pick green packaging when they have the choice, which matters even for a single personal parcel.
Branding for Small Sellers
Home-based businesses can still print a logo or thank-you message on their flat pack boxes for sale, turning a simple mailer into a branded unboxing moment without warehouse-scale minimums.
Why Order From Crat Packaging
- Small-pack ordering suited to individuals and micro-sellers
- Postal-optimized sizing built in from the start
- Custom branding available even at modest volumes
- US-based production with fast turnaround
- Recyclable materials as standard
- Simple reordering once you know your ideal size
How to Order
- Tell us your typical parcel size and mailing volume
- Choose plain kraft or custom-printed stock
- Confirm quantity, from small packs to case quantities
- Receive flat-shipped boxes ready to fold and mail
Frequently Asked Questions
Are these different from boxes sold as flat pack cartons?
Yes, this line is sized and styled for individual postal parcels rather than bulk warehouse cartons.
How is this different from flat pack boxes for sale?
This page focuses on the posting use case itself; the other covers ready-stock availability and quick turnaround for any use.
Can I order a small quantity?
Yes, we offer small packs suited to individuals and home-based sellers, not just bulk cases.
Do I need tape to close the box?
No, locking tabs hold it shut, though tape adds extra security for heavier or valuable items.
Will these fit standard postal rate boxes?
We size them to common postal dimensions to help you avoid oversized-parcel surcharges.
Can I add my logo to a small order?
Yes, custom printing is available even at modest quantities.
Shop with Confidence
