---
product_id: 152625624
title: "Self-Seal StayFlat Kraft Mailers, 17\" x 21\", 100/Case"
brand: "si products"
price: "$321.81"
currency: USD
in_stock: false
category: "product"
url: https://www.desertcart.us/products/152625624-self-seal-stayflat-kraft-mailers-17-x-21-100-case
store_origin: US
region: United States of America
---

# Self-Seal StayFlat Kraft Mailers, 17" x 21", 100/Case

**Brand:** si products
**Price:** $321.81
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** Self-Seal StayFlat Kraft Mailers, 17" x 21", 100/Case by si products
- **How much does it cost?** $321.81 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/152625624-self-seal-stayflat-kraft-mailers-17-x-21-100-case)

## Best For

- si products enthusiasts

## Why This Product

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

## Description

Description                                                            Self-Seal White Flat Mailers are strong to protect photos and documents during shipping.                        The 17" x 21" Kraft Flat Mailer features closure that is quick and easy to use. Mailer includes rigid chipboard construction that protects contents from bending and crushing. Sold 100 per case.                                                                                                                                                            17" x 21"                                                                                                                                                            QuickStrip closure is quick and easy to use - simply remove strip and press to close                                                                                                                                                            Rigid chipboard construction protects contents from bending and crushing                                                                                                                                                            Convenient tear-tab opens easily without harming contents                                                                                                                                                            Lightweight mailers reduces postage costs                                                                                                                                                            Staples Brand 100% Satisfaction Guaranteed                                                                                                                                                            Dimensions: 17" x 21"                                                                                                                                                            Manufactured from .028 kraft chipboard.                                                                                                                                                            Peel and seal closure with pull tear-strip for easy opening.                                                                                                                                                            Light-weight to save on postage.                                                                                                                                                            No additional stiffeners needed.                                                                                                                                                            Sold 100 per case.                                                                                                                                                                                                 Specifications                                                           Closure Type : Peel and Seal                             True Color : Kraft                             Material of Item : .028 chipboard                             Box Strength : Standard                             Number of Mailers per Pack : 100 Per Case                             Box Usage : Mailers                             Box Shape : Flat                             Mailer Pack Size : 100 Per Case                             Box Weight : 53.44                             Box Width : 17                             Box Length : 21                             Brand : SI Products                             Customizable : No                                                                                                                                                                         Weight : 0.06 lbs. per Carton

## Images

![Self-Seal StayFlat Kraft Mailers, 17" x 21", 100/Case - Image 1](https://www.quill.com/is/image/Quill/s0043767_s7?$img400$)

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**Shop now:** [https://www.desertcart.us/products/152625624-self-seal-stayflat-kraft-mailers-17-x-21-100-case](https://www.desertcart.us/products/152625624-self-seal-stayflat-kraft-mailers-17-x-21-100-case)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-04-27*