---
product_id: 188877003
title: "BOX USA StayFlat Envelope 12.75\"L x 15\"W 100-Pack for Keeping Photos, Documents & Artwork Protected During Mailing and Shipping"
brand: "box usa"
price: "118434 som"
currency: KGS
in_stock: true
reviews_count: 8
category: "Box Usa"
url: https://www.desertcart.kg/products/188877003-box-usa-stayflat-envelope-12-75l-x-15w-100-pack
store_origin: KG
region: Kyrgyzstan
---

# 12.75" x 15" perfect fit 100-pack bulk value Self-sealing secure closure BOX USA StayFlat Envelope 12.75"L x 15"W 100-Pack for Keeping Photos, Documents & Artwork Protected During Mailing and Shipping

**Brand:** box usa
**Price:** 118434 som
**Availability:** ✅ In Stock

## Summary

> 📬 Ship Smart, Stay Flat, Impress Always!

## Quick Answers

- **What is this?** BOX USA StayFlat Envelope 12.75"L x 15"W 100-Pack for Keeping Photos, Documents & Artwork Protected During Mailing and Shipping by box usa
- **How much does it cost?** 118434 som with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/188877003-box-usa-stayflat-envelope-12-75l-x-15w-100-pack)

## Best For

- box usa enthusiasts

## Why This Product

- Trusted box usa brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Security:** Peel-and-seal adhesive strip ensures tamper-resistant, moisture-proof packaging in seconds.
- • **Flat & Firm Protection:** Rigid chipboard design keeps documents and artwork pristine—no bending, no extra inserts needed.
- • **Bulk Ready for Business:** 100-pack supply tailored for high-volume e-commerce, print shops, and creative pros.
- • **USPS & Carrier Friendly:** Lightweight yet sturdy, optimized for First Class, Priority Mail, and commercial carriers to save on postage.
- • **Eco-Conscious Craftsmanship:** Made in the USA from 100% recyclable cardboard—professional packaging with a green footprint.

## Overview

BOX USA StayFlat Envelopes (12.75" x 15") deliver professional-grade, rigid mailers designed to protect photos, documents, and artwork during shipping. Featuring a self-sealing adhesive strip and durable chipboard construction, these 100-pack envelopes prevent bending without extra fillers, meet USPS and commercial carrier standards, and support eco-friendly practices with recyclable materials—all crafted in the USA for reliable, bulk-ready packaging solutions.

## Description

BOX USA Stayflat Flat Mailers offer dependable packaging for documents, photos, artwork, and marketing materials. These rigid envelopes are crafted from sturdy chipboard to keep contents flat and secure during shipping and handling. Our stayflat design eliminates bending of contents without the need for extra inserts or stiffeners, ensuring arrival looking professional and undamaged. Each mailer is lightweight, helping to save on postage while still providing excellent rigidity and meet the needs of USPS First Class, Priority Mail, and commercial carrier requirements. These mailers feature a reliable peel-and-seal adhesive strip that makes packing quick, clean, and secure protecting against tampering while providing moisture resistance. For companies managing large order volumes, BOX USA offers bulk packs of 100 or more in multiple sizes making them ideal for e-commerce sellers, fulfillment centers, print shops, and offices that need consistent, professional packaging. Many small businesses use these flat mailers for shipping brochures, photos, invoices, or product literature, while creative professionals rely on them for mailing artwork, proofs, or promotional pieces. The versatile design also makes them suitable for mailing books, magazines, calendars, and other media that must stay flat.

Review: Perfect For Standard Size Magazines ! - I needed these for shipping my standard size magazines and comics. You can't beat the price. I run a small online business so I have to watch my costs. The price was fantastic! Very sturdy!
Review: Good for signed documents, holds up to USPS handling. - Hefty cardboard, great glue strip. Keeps my signed documents safe, and extra safe with added slip of cardboard. Of the hundreds I have shipped, USPS only was able to "mangle" two of them. No complaints from my customers, no extra taping needed. Great product, made in the USA.

## Features

- SELF-SEALING STAYFLAT MAILERS: Enhance your packaging experience with self-sealing Cardboard StayFlat Mailers with high strength seams to keep your contents intact even if over packed
- OPTIMAL PACKAGING SOLUTION AND SUPPLIES: Designed to not bend when shipping or storing documents, artwork, posters, blueprints, graphics, and charts. Convenient to open pull-tab tear strips make opening easy.
- STAYFLAT MAILERS: ideal for small businesses, these Cardboard StayFlat Mailers offer a professional solution for shipping needs & are designed to fit various package sizes, making them versatile for many products
- MULTIPLE SIZES AVAILABLE – BOX USA offers over 1,500 box sizes to fit your packing and shipping needs, from small shipping boxes to large moving cartons.
- MADE IN THE USA – Constructed from 100% recyclable cardboard for reliable protection and eco-friendly packaging.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B081ZRVN8S |
| Best Sellers Rank | #9,472 in Office Products ( See Top 100 in Office Products ) #121 in Envelope Mailers |
| Brand | BOX USA |
| Closure | Self-Seal |
| Color | White |
| Customer Reviews | 4.7 4.7 out of 5 stars (568) |
| Date First Available | November 25, 2019 |
| Item Weight | 34 pounds |
| Item model number | BURM4SS |
| Manufacturer | Box USA |
| Manufacturer Part Number | BURM4SS |
| Material Type | Cardboard |
| Number of Items | 100 |
| Shape | Rectangular |
| Size | 12 3/4 x 15 |

## Product Details

- **Brand:** BOX USA
- **Closure Type:** Self-Seal
- **Color:** White
- **Material:** Cardboard
- **Occasion:** all occasions

## Images

![BOX USA StayFlat Envelope 12.75"L x 15"W 100-Pack for Keeping Photos, Documents & Artwork Protected During Mailing and Shipping - Image 1](https://m.media-amazon.com/images/I/516yxbAMQbL.jpg)
![BOX USA StayFlat Envelope 12.75"L x 15"W 100-Pack for Keeping Photos, Documents & Artwork Protected During Mailing and Shipping - Image 2](https://m.media-amazon.com/images/I/51yXf46W+8L.jpg)
![BOX USA StayFlat Envelope 12.75"L x 15"W 100-Pack for Keeping Photos, Documents & Artwork Protected During Mailing and Shipping - Image 3](https://m.media-amazon.com/images/I/71-PHjH+nGL.jpg)
![BOX USA StayFlat Envelope 12.75"L x 15"W 100-Pack for Keeping Photos, Documents & Artwork Protected During Mailing and Shipping - Image 4](https://m.media-amazon.com/images/I/71arkoVBIXL.jpg)
![BOX USA StayFlat Envelope 12.75"L x 15"W 100-Pack for Keeping Photos, Documents & Artwork Protected During Mailing and Shipping - Image 5](https://m.media-amazon.com/images/I/71fiO4l-HGL.jpg)

## Questions & Answers

**Q: What is the weight per 12.75 x 15 mailer?**
A: 5.4 oz

**Q: How much does one mailer weigh in ounces?**
A: My scale says 3.4 ounces.

**Q: Are these suitable for a heavy book (5 or 6 lbs)?  Thanks.**
A: Depends on shape and thickness of book.  I would use a poly mailer instead as a heavy book could split the seams of mailer and potentially fall out.

**Q: How much does one mailer weigh?**
A: Not sure of the weight but I used them to mail portrait packages with 3 8x10’s in each stay flat mailer. The least expensive method to mail was 1.67 through USPS

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect For Standard Size Magazines !
*by J***S on October 15, 2025*

I needed these for shipping my standard size magazines and comics. You can't beat the price. I run a small online business so I have to watch my costs. The price was fantastic! Very sturdy!

### ⭐⭐⭐⭐⭐ Good for signed documents, holds up to USPS handling.
*by N***. on November 4, 2025*

Hefty cardboard, great glue strip. Keeps my signed documents safe, and extra safe with added slip of cardboard. Of the hundreds I have shipped, USPS only was able to "mangle" two of them. No complaints from my customers, no extra taping needed. Great product, made in the USA.

### ⭐⭐⭐⭐⭐ No more complaints
*by A***R on November 20, 2025*

I ship over a hundred packages a year via UPS. I was getting complaints from clients that the envelopes that I was using were damaged on arrival so I started using these mailers. These things are virtually indestructible. Tape over glue on sealing flap gets hung up once in a while but not if you are careful. No more complaints.

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**Shop now:** [https://www.desertcart.kg/products/188877003-box-usa-stayflat-envelope-12-75l-x-15w-100-pack](https://www.desertcart.kg/products/188877003-box-usa-stayflat-envelope-12-75l-x-15w-100-pack)

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*Product available on Desertcart Kyrgyzstan*
*Store origin: KG*
*Last updated: 2026-03-10*