--- product_id: 3930034 title: "Quality Park #8 5/8 Security Envelopes, Double Window, Self Seal Envelopes for Invoices/Statements, 3-5/8\" x 8-5/8\", 24 lb White, 500/Box (QUA24539)" brand: "quality park" price: "Β£57.90" currency: GBP in_stock: true reviews_count: 10 category: "Quality Park" url: https://www.desertcart.co.uk/products/3930034-quality-park-8-5-8-security-envelopes-double-window-self store_origin: GB region: United Kingdom --- # 3.63" x 8.63" perfect fit Security tint blocks prying eyes Self-seal, no moisture needed Quality Park #8 5/8 Security Envelopes, Double Window, Self Seal Envelopes for Invoices/Statements, 3-5/8" x 8-5/8", 24 lb White, 500/Box (QUA24539) **Brand:** quality park **Price:** Β£57.90 **Availability:** βœ… In Stock ## Summary > πŸ“¬ Seal your success with security and style! ## Quick Answers - **What is this?** Quality Park #8 5/8 Security Envelopes, Double Window, Self Seal Envelopes for Invoices/Statements, 3-5/8" x 8-5/8", 24 lb White, 500/Box (QUA24539) by quality park - **How much does it cost?** Β£57.90 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/3930034-quality-park-8-5-8-security-envelopes-double-window-self) ## Best For - quality park enthusiasts ## Why This Product - Trusted quality park brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Bulk Value Pack:** 500 envelopes per box to keep your office stocked and ready for monthly billing cycles. - β€’ **Effortless Sealing:** Redi-Seal press-to-seal flap eliminates the need for licking or moistureβ€”just press and go. - β€’ **Privacy-First Security:** Special security tint scrambles text to protect sensitive info even under light exposure. - β€’ **Professional White Finish:** Clean, crisp 24 lb white wove paper projects a polished, trustworthy brand image. - β€’ **Precision Fit for Business:** Double window design aligns perfectly with invoices and statements for seamless mailing. ## Overview Quality Park #8 5/8 Security Envelopes offer a professional double window design sized 3-5/8" x 8-5/8" to perfectly display sender and receiver addresses. Featuring a privacy-enhancing security tint and a convenient Redi-Seal self-adhesive flap, these 24 lb white envelopes come in a bulk pack of 500, ideal for secure, efficient mailing of invoices and statements without fuss. ## Description Compatible with most standard 3-1/2 x 8-1/2 inch checks for payroll and accounts payable applications. The top window (7/8" x 3-1/2") is positioned 5/8" from the left and 2-1/4" from the bottom of the envelope. The bottom window (1"x 4 ) is 5/8" from the left and 5/8" from the bottom. Poly windows, inside tint. Review: Good quality - Value for money, perfect size, easy of use also definitely recommend. Review: Great for the price - I was going to order check envelopes for our company, $750.00 for 5000 envelopes with our logo them. I figured it was worth giving these a try. The envelopes work great. The payee is clearly shown through the window and the logo on our checks shows clearly. I figure most people/companies receiving the check are more concerned with what's in the envelope versus a fancy logo on the outside. You can't put a lot in these envelopes, a check and maybe a stub. Great buy. ## Features - Our 500-ct Quality Park #8 5/8 double window envelopes (3-5/8 in x 8-5/8 in) fit select invoices & statements; our self sealing envelopes have Redi-Seal press-to-seal flaps & security tints - Redi-Seal mailing envelopes have a unique double flap design that requires no moisture; just raise the lower flap and press for a no-fuss self seal envelope - Double window envelopes show just the sender and receiver addresses; our business envelopes keep private info out of view; top window: 7/8" x 3-1/2"; bottom window 1" x 4"; envelope: 3-5/8" x 8-5/8" - Security envelopes shield identification numbers & private data with a special security pattern to scramble the appearance of text; keeps envelope contents safe from prying eyes, even if held to light - #8 5/8 envelopes measure 3-5/8" x 8-5/8"; made of 24 lb white wove paper with side seams; stock up on boxes of 500 envelopes for monthly billing ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B000AN39T6 | | Additional Features | Self-Adhesive Closure | | Best Sellers Rank | #16,713 in Office Products ( See Top 100 in Office Products ) #59 in Business Mailing Envelopes | | Brand | Quality Park | | Brand Name | Quality Park | | Closure Type | Self-Seal | | Color | White | | Customer Reviews | 4.4 out of 5 stars 502 Reviews | | Global Trade Identification Number | 00085227245397 | | Included Components | 24539 | | Item Dimensions L x W | 8.63"L x 3.63"W | | Item Shape | Rectangular | | Item Type Name | Security Envelopes | | Item Weight | 5.1 pounds | | Manufacturer | 0 | | Material | Paper | | Material Type | Paper | | Model Name | QUA24539 623635 | | Number of Items | 500 | | Occasion | Mailing | | Occasion Type | Mailing | | Recommended Uses For Product | Security | | Size | 3-5/8 x 8-5/8 | | Style | Security | | UPC | 100003518851 641438560225 799916130610 804993587407 801593324401 809099278235 799198386170 085227245397 523160234660 619730724300 800188047138 799198641538 080850190274 823019738272 791836525057 806792125712 800011367495 696747451801 045555752943 666673164298 809302107673 641438150679 640206462822 638084794678 791836499198 | | Unit Count | 500 Count | | Warranty Description | 1-Year Limited | ## Product Details - **Brand:** Quality Park - **Closure Type:** Self-Seal - **Color:** White - **Material:** Paper - **Number of Items:** 500 ## Images ![Quality Park #8 5/8 Security Envelopes, Double Window, Self Seal Envelopes for Invoices/Statements, 3-5/8" x 8-5/8", 24 lb White, 500/Box (QUA24539) - Image 1](https://m.media-amazon.com/images/I/61pBynotbuL.jpg) ![Quality Park #8 5/8 Security Envelopes, Double Window, Self Seal Envelopes for Invoices/Statements, 3-5/8" x 8-5/8", 24 lb White, 500/Box (QUA24539) - Image 2](https://m.media-amazon.com/images/I/51s5AgFqR8L.jpg) ![Quality Park #8 5/8 Security Envelopes, Double Window, Self Seal Envelopes for Invoices/Statements, 3-5/8" x 8-5/8", 24 lb White, 500/Box (QUA24539) - Image 3](https://m.media-amazon.com/images/I/31bNvbRBvTL.jpg) ![Quality Park #8 5/8 Security Envelopes, Double Window, Self Seal Envelopes for Invoices/Statements, 3-5/8" x 8-5/8", 24 lb White, 500/Box (QUA24539) - Image 4](https://m.media-amazon.com/images/I/61lcp1sTliL.jpg) ![Quality Park #8 5/8 Security Envelopes, Double Window, Self Seal Envelopes for Invoices/Statements, 3-5/8" x 8-5/8", 24 lb White, 500/Box (QUA24539) - Image 5](https://m.media-amazon.com/images/I/81CQVA-D2rL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: How many checks can one envelope hold?** A: I use QB checks and have sometimes put 2 checks with their stubs in them. Still had room if one needed to put more in. **Q: i buy quickbooks redi seal for payroll checks their measurements are 8 3/4 w x 3 9/16 will these fit** A: I also use QuickBooks laser checks. They fit just fine. **Q: What are the window sizes?** A: top left window measures 3 1/2 inches x 3/4 inchlower left window measures 4 inches x 1 inchwe have in stock and are ready to ship today. Thank youGTN Office Basics ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good quality *by A***Z on February 20, 2026* Value for money, perfect size, easy of use also definitely recommend. ### ⭐⭐⭐⭐⭐ Great for the price *by T***E on December 5, 2012* I was going to order check envelopes for our company, $750.00 for 5000 envelopes with our logo them. I figured it was worth giving these a try. The envelopes work great. The payee is clearly shown through the window and the logo on our checks shows clearly. I figure most people/companies receiving the check are more concerned with what's in the envelope versus a fancy logo on the outside. You can't put a lot in these envelopes, a check and maybe a stub. Great buy. ### ⭐⭐⭐⭐⭐ Works Good *by P***T on October 18, 2019* I have bought these type of envelopes before and glue was not good, these work well. ## Frequently Bought Together - Quality Park #8 5/8 Security Envelopes, Double Window, Self Seal Envelopes for Invoices/Statements, 3-5/8" x 8-5/8", 24 lb White, 500/Box (QUA24539) - Amazon Basics Multipurpose Copy Printer Paper, 8.5" x 11", 20 lb, 8 Reams, 4000 Sheets, 92 Bright, White - Quality Park #9 Security Envelopes, Double Window, Self Seal, Invoices/QuickBooks Statements, 3-7/8 x 8-7/8 Inches, 24 lb White, 500/Box (QUA24529) --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/3930034-quality-park-8-5-8-security-envelopes-double-window-self](https://www.desertcart.co.uk/products/3930034-quality-park-8-5-8-security-envelopes-double-window-self) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-08-23*