--- product_id: 34590567 title: "500#8 Self Seal Double Window Security Envelopes Designed for QuickBooks Checks - Computer Printed Checks - 3 5/8 X 8 11/16 (Not for Invoices)" brand: "blue summit supplies" price: "€ 75.22" currency: EUR in_stock: true category: "Blue Summit Supplies" url: https://www.desertcart.at/products/34590567-500-8-self-seal-double-window-security-envelopes-designed-quickbooks store_origin: AT region: Austria --- # Peel-and-seal quick closure Precise #8 size (3.6" x 8.6") Security tint for privacy 500#8 Self Seal Double Window Security Envelopes Designed for QuickBooks Checks - Computer Printed Checks - 3 5/8 X 8 11/16 (Not for Invoices) **Brand:** blue summit supplies **Price:** € 75.22 **Availability:** βœ… In Stock ## Summary > πŸ“¬ Seal your checks with speed and securityβ€”because your business deserves the best! ## Quick Answers - **What is this?** 500#8 Self Seal Double Window Security Envelopes Designed for QuickBooks Checks - Computer Printed Checks - 3 5/8 X 8 11/16 (Not for Invoices) by blue summit supplies - **How much does it cost?** € 75.22 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.at](https://www.desertcart.at/products/34590567-500-8-self-seal-double-window-security-envelopes-designed-quickbooks) ## 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 - β€’ **Bulk Value Pack:** 500 envelopes ensure your payroll and vendor payments never run dry. - β€’ **Privacy-First Design:** Security tint conceals sensitive info, protecting your financial data. - β€’ **Effortless Seal & Send:** Peel-and-seal adhesive speeds up check runs, boosting office efficiency. - β€’ **Perfect QuickBooks Fit:** Double windows align exactly with QuickBooks checks for seamless mailing. - β€’ **Optimized Window Placement:** Double windows keep addresses USPS-clear while minimizing info exposure. ## Overview These 500 #8 double window self-seal envelopes by Blue Summit Supplies are designed specifically for QuickBooks checks, featuring precise window alignment, security tint to protect sensitive information, and a peel-and-seal closure for fast, reliable mailing. Sized at 3 5/8 x 8 11/16 inches, they offer bulk value and professional-grade durability for efficient business mail handling. ## Description desertcart.com : 500#8 Self Seal Double Window Security Envelopes Designed for QuickBooks Checks - Computer Printed Checks - 3 5/8 X 8 11/16 (Not for Invoices) : Office Products ## Features - QuickBooks Fit And Privacy – Businesses and accounting teams mailing QuickBooks checks use these #8 double window envelopes designed to align with check layouts so only return and recipient addresses show, while the security tint helps conceal amounts and memo lines. - Peel-And-Seal Speed – Office staff and payroll teams handling weekly check runs use these self seal window envelopes for QuickBooks checks with a peel-and-seal adhesive strip that creates a secure closure quickly, reducing sealing time and improving workflow efficiency. - #8 Size With 2 Windows – Businesses mailing checks use these #8 double window envelopes measuring 3 5/8 x 8 11/16 inches which fit standard check and voucher-style folds to support consistent insertion and check-only mailing tasks. - Business Envelopes with Perfect Window Alignment – Accounting teams and small businesses use these window envelopes for checks with precisely placed double windows that keep addresses clearly visible for USPS processing while minimizing exposure of sensitive personal or financial information. - QuickBooks Check Envelopes Self Seal for Bulk Office Value – Offices and businesses managing recurring payments use this 500-pack of double window self seal envelopes made from white 24lb paper with durable film windows to maintain a reliable supply for payroll, vendor payments, and accounts payable. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B01IULS0RU | | Additional Features | Double Window, Peel & Seal, Security Tint, Self-Adhesive Closure | | Best Sellers Rank | #8,255 in Office Products ( See Top 100 in Office Products ) #41 in Business Mailing Envelopes | | Brand Name | Blue Summit Supplies | | Closure Type | Self-Seal | | Color | White | | Customer Reviews | 4.7 4.7 out of 5 stars (1,391) | | Item Dimensions L x W | 8.6"L x 3.6"W | | Item Shape | Rectangular | | Item Weight | 1 Pounds | | Manufacturer | Blue Summit Supplies | | Material Type | Paper | | Model Name | FBA_BSS-92588-001 | | Number of Items | 500 | | Occasion | Business Mail, Checks | | Occasion Type | Business Mail, Checks | | Recommended Uses For Product | Business Mail, Checks | | Size | Number 8 | | Style | Security | | UPC | 760537217271 | | Unit Count | 500 Count | ## Product Details - **Brand:** Blue Summit Supplies - **Closure Type:** Self-Seal - **Color:** White - **Material:** Paper - **Occasion:** Business Mail, Checks ## Images ![500#8 Self Seal Double Window Security Envelopes Designed for QuickBooks Checks - Computer Printed Checks - 3 5/8 X 8 11/16 (Not for Invoices) - Image 1](https://m.media-amazon.com/images/I/81+FKi+K4dL.jpg) --- ## 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.at/products/34590567-500-8-self-seal-double-window-security-envelopes-designed-quickbooks](https://www.desertcart.at/products/34590567-500-8-self-seal-double-window-security-envelopes-designed-quickbooks) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-07-14*