--- product_id: 42050005 title: "500 No. 8 Flip and Seal Double Window Security Check Envelopes - Designed for Quickbooks Printed Checks - Number 8 Size 3 5/8 Inch x 8 11/16 Inch" brand: "blue summit supplies" price: "264.61 DT" currency: TND in_stock: true reviews_count: 12 category: "Blue Summit Supplies" url: https://www.desertcart.tn/products/42050005-500-no-8-flip-and-seal-double-window-security-check store_origin: TN region: Tunisia --- # Perfect QuickBooks fit Security tint blocks check details Self-seal for fast, strong closure 500 No. 8 Flip and Seal Double Window Security Check Envelopes - Designed for Quickbooks Printed Checks - Number 8 Size 3 5/8 Inch x 8 11/16 Inch **Brand:** blue summit supplies **Price:** 264.61 DT **Availability:** ✅ In Stock ## Summary > ✉️ Secure your checks in style—because your business deserves the best! ## Quick Answers - **What is this?** 500 No. 8 Flip and Seal Double Window Security Check Envelopes - Designed for Quickbooks Printed Checks - Number 8 Size 3 5/8 Inch x 8 11/16 Inch by blue summit supplies - **How much does it cost?** 264.61 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/42050005-500-no-8-flip-and-seal-double-window-security-check) ## Best For - blue summit supplies enthusiasts ## Why This Product - Trusted blue summit supplies brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Bulk Pack Efficiency:** 500 envelopes per pack to keep your office stocked and your workflow uninterrupted. - • **Flip & Seal Convenience:** Self-sealing flap guarantees a quick, reliable closure every time—no mess, no fuss. - • **Double Window Privacy Shield:** Only addresses show—check amounts and memos stay hidden for ultimate security. - • **Professional Grade Durability:** Crafted from sturdy 24 LB white wove paper to maintain a polished look through transit. - • **Tailored for QuickBooks Checks:** Wider design ensures smooth check insertion without adjusting your software. ## Overview These 500 No. 8 Flip and Seal Double Window Security Check Envelopes are expertly designed to fit QuickBooks printed checks with a slightly wider size for easy insertion. Featuring a unique double window that reveals only addresses, combined with a security tint to conceal sensitive check details, they ensure maximum privacy. The self-seal flap offers a fast, strong closure, while the durable 24 LB white wove paper maintains a professional appearance throughout mailing. Ideal for busy professionals seeking reliable, secure, and efficient check mailing solutions. ## Description Product description Your QuickBooks Printed Checks will Line up Perfectly It can be so difficult to find envelopes that fit business checks perfectly. Some will show the recipient’s address but not the sender’s address, while others will hide parts of the addresses, and worse, others will show parts of the check like the check amount, or check memo. So much for security. Our check envelopes have a unique bottom window design so your check amounts and memos will always be hidden, and our window locations are positioned perfectly to line up with your addresses. NO NEED to reformat your software. Bottom window location of 3/4'' from the bottom, and a window height of 7/8’’ prevents the check amounts from showing in the bottom window like other check envelopes Bottom window location of 7/8’’ from the left side, and a window width of 3.5’’ ensures your recipients address will show without the need to reformat quickbooks for both tri-fold and 3 checks per page check paper. Just print and slide the check in Security with a Professional Look It can be frustrating to purchase envelopes only to find them flimsy enough to have you worried about their durability during transit. Our envelopes are made of 24 LB White wove paper that will provide a professional look from the box all the way to your destination Your checks will be secure with an easy to use Flip and Seal design that will hold its seal and completely hide your checks behind our dark black security tint ## Features - Fast Flip Seal Closure Check Envelope – Designed for bookkeeping teams and offices that mail checks regularly, these #8 double window envelopes self seal use a flip-and-press adhesive closure on durable 24 lb white wove paper so users can close envelopes quickly without licking or peel strips, helping speed up pay and accounts payable tasks. - QuickBooks Window Alignment – For businesses printing checks for payroll and vendor payments, these QuickBooks check envelopes self seal are made from 24 lb white wove paper and align with standard check or voucher layouts so addresses appear correctly in the windowed format, reducing reprints, adjustments, and mailing errors. - Double Window Check Format – For accounting teams mailing business checks, these 24 lb white wove paper 2 window envelopes compatible for QuickBooks checks display only the necessary address fields through two windows while keeping the rest of the check concealed, helping prevent exposure of sensitive details during mailing. - Security Tint Privacy Pattern – For offices mailing checks and financial documents, these self sealing 24lb white wove paper envelopes include a confidential security tint pattern to reduce read-through, helping protect check amounts, memo lines, and account details during transit. - #8 Size For Business Checks – For small businesses and accounting teams running frequent check batches, these 3 5/8 x 8 11/16 #8 QuickBooks check envelopes are made from 24 lb white wove paper and come in a 500-pack to support high-volume mailing workflows with consistent fit and reliable processing. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06XH5J3ZV | | Additional Features | Double Window, Flip and Seal, Security Tint, Self Sealing | | Best Sellers Rank | #2,751 in Office Products ( See Top 100 in Office Products ) #20 in Business Mailing Envelopes | | Brand | Blue Summit Supplies | | Brand Name | Blue Summit Supplies | | Closure Type | Self-Seal | | Color | White | | Customer Reviews | 4.7 out of 5 stars 1,441 Reviews | | Item Dimensions L x W | 8.7"L x 3.6"W | | Item Shape | Rectangular | | Item Weight | 1 Pounds | | Manufacturer | Blue Summit Supplies | | Material | Paper | | Material Type | Paper | | Model Name | No. 8 Double Window Security Check Envelopes for QuickBooks, Flip and Seal | | Number of Items | 1 | | Occasion | AP, Business, Payroll | | Occasion Type | Business Mail, Checks | | Recommended Uses For Product | Checks | | Size | Number 8 | | Style | Security | | UPC | 869643000309 | | Unit Count | 500 Count | ## Product Details - **Brand:** Blue Summit Supplies - **Closure Type:** Self-Seal - **Color:** White - **Material:** Paper - **Occasion:** Business ## Images ![500 No. 8 Flip and Seal Double Window Security Check Envelopes - Designed for Quickbooks Printed Checks - Number 8 Size 3 5/8 Inch x 8 11/16 Inch - Image 1](https://m.media-amazon.com/images/I/719vfSLraRL.jpg) ![500 No. 8 Flip and Seal Double Window Security Check Envelopes - Designed for Quickbooks Printed Checks - Number 8 Size 3 5/8 Inch x 8 11/16 Inch - Image 2](https://m.media-amazon.com/images/I/81M+RylpM6L.jpg) ![500 No. 8 Flip and Seal Double Window Security Check Envelopes - Designed for Quickbooks Printed Checks - Number 8 Size 3 5/8 Inch x 8 11/16 Inch - Image 3](https://m.media-amazon.com/images/I/8139-RyBmXL.jpg) ![500 No. 8 Flip and Seal Double Window Security Check Envelopes - Designed for Quickbooks Printed Checks - Number 8 Size 3 5/8 Inch x 8 11/16 Inch - Image 4](https://m.media-amazon.com/images/I/81i0R+I+jWL.jpg) ![500 No. 8 Flip and Seal Double Window Security Check Envelopes - Designed for Quickbooks Printed Checks - Number 8 Size 3 5/8 Inch x 8 11/16 Inch - Image 5](https://m.media-amazon.com/images/I/81zo4EnX4LL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Has the issue with the inferior qualiry paper, preforate sides, and size/ease of use been corrected? This is as seen in more recent reviews.** A: We bought ours at the beginning of the year and have had no problems size, paper or adhesive. Will reorder when needed **Q: How many envelopes in a pack?** A: 500 **Q: what is the location of the top window? Measurements?** A: the top window is 3/8 from top and 3/8 from the side. It measures 3 1/2 inches wide and 7/8 inches wide. **Q: Do these have the perforated backs/tops for easy opening?** A: No, Easy open perforations. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Review *by S***T on November 14, 2025* ### ⭐⭐⭐⭐⭐ Review *by M***S on October 17, 2022* ### ⭐⭐⭐⭐⭐ Review *by A***R on June 21, 2023* --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/42050005-500-no-8-flip-and-seal-double-window-security-check](https://www.desertcart.tn/products/42050005-500-no-8-flip-and-seal-double-window-security-check) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-04*