---
product_id: 6179855
title: "20 Forever Stamped Envelopes - #10 Self Seal Security Envelopes (4-1/8 x 9-1/2 inch) (One Pack) (Stamp Design Varies)"
brand: "united states postal service"
price: "€ 35.95"
currency: EUR
in_stock: true
url: https://www.desertcart.pt/products/6179855-20-forever-stamped-envelopes-10-self-seal-security-envelopes-4
store_origin: PT
region: Portugal
---

# Standard #10 size (4-1/8 x 9-1/2 in) Forever stamps valid for 1 oz letters Self-seal security closure 20 Forever Stamped Envelopes - #10 Self Seal Security Envelopes (4-1/8 x 9-1/2 inch) (One Pack) (Stamp Design Varies)

**Brand:** united states postal service
**Price:** € 35.95
**Availability:** ✅ In Stock

## Summary

> 📬 Seal the deal with style and security!

## Quick Answers

- **What is this?** 20 Forever Stamped Envelopes - #10 Self Seal Security Envelopes (4-1/8 x 9-1/2 inch) (One Pack) (Stamp Design Varies) by united states postal service
- **How much does it cost?** € 35.95 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/6179855-20-forever-stamped-envelopes-10-self-seal-security-envelopes-4)

## Best For

- united states postal service enthusiasts

## Why This Product

- Trusted united states postal service brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Secure & Professional:** Self-seal closure ensures your documents stay private and intact.
- • **Bulk Pack for Efficiency:** 20 envelopes per pack to keep your office or home mailing needs fully stocked.
- • **Universal Forever Stamps:** Each envelope includes USPS Forever stamps, always valid regardless of rate changes.
- • **Ready-to-Mail Convenience:** Pre-stamped envelopes save you time and hassle—just seal and send!
- • **Classic & Business-Appropriate Designs:** Featuring tasteful, general themes like flags and liberty—perfect for professional correspondence.

## Overview

This pack of 20 #10 self-seal security envelopes comes pre-stamped with USPS Forever stamps valid for one-ounce letters. Sized at 4-1/8 x 9-1/2 inches, these envelopes feature professional, general-themed stamp designs and a secure closure, making them ideal for hassle-free, business-appropriate mailing.

## Description

United States Postal Service

## Features

- Stamps may vary, but will equal or surpass the current Forever one ounce postage rate
- Envelopes are ready to mail, with stamps valid for one-ounce letters
- Envelopes are ready to mail, with forever stamps valid for one-ounce letters
- Stamps may vary, but will be business appropriate, general themes such as flags, liberty, Purple Heart (no religious stamps, and no specific themes or people)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | USPS |
| Brand | United States Postal Service |
| Item Weight | 3.84 ounces |
| Product Dimensions | 9.7 x 4.2 x 0.5 inches |
| Item model number | SG_B00MV5A0NE_US |
| Is Discontinued By Manufacturer | No |
| Color | White |
| Closure | Self-Seal |
| Shape | Rectangular |
| Material Type | Paper |
| Number of Items | 20 |
| Size | 20 Envelopes |
| Sheet Size | 4-1/8 x 9-1/2 Inches |
| Manufacturer Part Number | Envelope |

## Product Details

- **Brand:** United States Postal Service
- **Color:** White
- **Closure Type:** Self-Seal
- **Material:** Paper
- **Number of Items:** 20

## Images

![20 Forever Stamped Envelopes - #10 Self Seal Security Envelopes (4-1/8 x 9-1/2 inch) (One Pack) (Stamp Design Varies) - Image 1](https://m.media-amazon.com/images/I/610nXHY7deL.jpg)

## Questions & Answers

**Q: Can the inmate's at dodge Correctional institution use these already stamped envelopes**
A: The inmate's at Dodge Correctional institution should buy directly from the inmate commissary store.
Dodge Correctional institution may not even allow or accept this Amazon shipment for the inmate as it's not a regular letter mail from family.

**Q: are these printed stamps or sticker stamps?**
A: The stamps are sticker stamps.

**Q: Can I use this stamp and evenlope to mail my tax forms？Do I need to buy extra stamps？**
A: I would recommend mailing your tax forms using a tracking and traceable method.  Visit your local mail and shipping store for assistance. Only because you want to make sure your tax forms arrive.

These stamped envelopes can be used to mail anything else, bills, personal mail, etc.

**Q: Can an Oregon Dept of corrections inmate be able to use these?**
A: They need to buy from the inmate store/or if you can buy them from the store for them.

## Frequently Bought Together

- 20 Forever Stamped Envelopes #10 Self Seal Security Envelopes (4-1/8 x 9-1/2 inch) (USPS Stamp Design Varies)
- USPS Forever Stamps "Four Flags" Booklet of 20 Stamps
- Aimoh #10 Security Self Seal Envelopes – 100 Qty |No Window, EnveGuard, 4⅛ x 9½", White, 24 LB, 100 Count (34100)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-01-23*