---
product_id: 523359352
title: "SINJEUN 100 Pack A4 C4 Cardboard Envelopes - 325mm x 230mm Self Seal White Manilla Hard Board Backed Envelopes for Files, Photos, Pictures, Papers ﻿"
brand: "sinjeun"
price: "KD 30.87"
currency: KWD
in_stock: true
url: https://www.desertcart.com.kw/products/523359352-sinjeun-100-pack-a4-c4-cardboard-envelopes-325mm-x-230mm
store_origin: KW
region: Kuwait
---

# 325mm x 230mm size 100 pack quantity Self-adhesive closure SINJEUN 100 Pack A4 C4 Cardboard Envelopes - 325mm x 230mm Self Seal White Manilla Hard Board Backed Envelopes for Files, Photos, Pictures, Papers ﻿

**Brand:** sinjeun
**Price:** KD 30.87
**Availability:** ✅ In Stock

## Summary

> 📬 Send with Style and Confidence!

## Quick Answers

- **What is this?** SINJEUN 100 Pack A4 C4 Cardboard Envelopes - 325mm x 230mm Self Seal White Manilla Hard Board Backed Envelopes for Files, Photos, Pictures, Papers ﻿ by sinjeun
- **How much does it cost?** KD 30.87 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/523359352-sinjeun-100-pack-a4-c4-cardboard-envelopes-325mm-x-230mm)

## Best For

- sinjeun enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Usage:** Perfect for everything from photos to important documents.
- • **Ultimate Protection:** Keep your documents safe from bending and wrinkling.
- • **Satisfaction Guaranteed:** 30-day money-back promise for peace of mind.
- • **Time-Saving Convenience:** Self-seal and tear strip for effortless packing and opening.
- • **Professional Presentation:** Elevate your mailing game with a sleek, clean design.

## Overview

The SINJEUN 100 Pack A4 Stay Flat Mailers are premium quality cardboard envelopes designed to keep your documents safe and professional. Measuring 325mm x 230mm, these self-seal envelopes are perfect for mailing a variety of items, ensuring they arrive in pristine condition. With a commitment to quality and a 30-day money-back guarantee, you can trust SINJEUN for all your mailing needs.

## Description

SINJEUN 100 Pack A4 C4 Cardboard Envelopes - 325mm x 230mm Self Seal White Manilla Hard Board Backed Envelopes for Files, Photos, Pictures, Papers

## Features

- HIGH-QUALITY MATERIAL - These stay flat mailers are made of premium paperboard material. Even if they are not thick, they can prevent your documents from bending, folding and wrinkling, making your items reach their destination safely.
- SELF-ADHESIVE DESIGN - Strong flap adhesive can seal your stay flat envelopes firmly to provide the max protection for your privacy. The tear strip design can help you easily open the package and save your precious time.
- PROFESSIONAL APPEARANCE - The simple and clean white style gives them a professional appearance. You will get 100 packs of white cardboard envelopes. The size of each envelope is 12.7 x 9 inches. Their space is large enough to store your files.
- WIDELY USED - The stay flat mailers are very suitable for mailing documents, photos, papers, magazines, certificates, CDs, brochures, greeting cards, invitations, handmade crafts and so on. They are the perfect choice for courier companies, post offices, schools, factory wholesalers, retail stores, and personal use.
- BUY WITH CONFIDENCE - We stand by the quality of our products and provide super-friendly customer service. For whatever reason you're not happy with the stay flat white cardboard envelopes, We promise 30-day money back guarantee.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | SINJEUN |
| Brand | SINJEUN |
| Model Number | SINJEUN |
| Product Dimensions | 32.5 x 23 x 0.1 cm; 4.87 kg |
| Colour | White |
| Closure | Self-Seal |
| Shape | Rectangular |
| Material Type | Paperboard |
| Number of Items | 100 |
| Size | 325 x 230mm |
| Manufacturer Part Number | SINJEUN |
| Item Weight | 4.87 kg |

## Product Details

- **Brand:** SINJEUN
- **Colour:** White
- **Closure type:** Self-Seal
- **Material:** Paperboard
- **Number of items:** 100

## Images

![SINJEUN 100 Pack A4 C4 Cardboard Envelopes - 325mm x 230mm Self Seal White Manilla Hard Board Backed Envelopes for Files, Photos, Pictures, Papers ﻿ - Image 1](https://m.media-amazon.com/images/I/61xPvxVeGjL.jpg)

## Available Options

This product comes in different **Colour Name, Size Name** options.

## Frequently Bought Together

- SINJEUN 100 Pack A4 Stay Flat Mailers Cardboard Envelopes, 325mm x 230mm Self Seal White Cardboard Envelopes, Stay Flat Envelopes for Files, Photos, Pictures, Papers
- A4 Clear Self-adhesive Bags 100 Pack, 22x30CM Self Sealing Cellophane Display Bags/Sealable Bags, Food Safe, A4 Cello Bags OPP for Cookies,Cards,Envelopes,Pictures

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**Shop now:** [https://www.desertcart.com.kw/products/523359352-sinjeun-100-pack-a4-c4-cardboard-envelopes-325mm-x-230mm](https://www.desertcart.com.kw/products/523359352-sinjeun-100-pack-a4-c4-cardboard-envelopes-325mm-x-230mm)

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-02-11*