--- product_id: 42050005 title: "Blue Summit Supplies 500 #8 Double Window Security Envelopes, Flip & Seal" brand: "blue summit supplies" price: "€ 140.70" currency: EUR in_stock: true category: "Blue Summit Supplies" url: https://www.desertcart.at/products/42050005-blue-summit-supplies-500-8-double-window-security-envelopes-flip store_origin: AT region: Austria --- # 500-pack bulk supply Security tint privacy pattern Fast flip & seal closure Blue Summit Supplies 500 #8 Double Window Security Envelopes, Flip & Seal **Brand:** blue summit supplies **Price:** € 140.70 **Availability:** βœ… In Stock ## Summary > πŸ“¬ Seal the deal with speed, security, and style! ## Quick Answers - **What is this?** Blue Summit Supplies 500 #8 Double Window Security Envelopes, Flip & Seal by blue summit supplies - **How much does it cost?** € 140.70 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/42050005-blue-summit-supplies-500-8-double-window-security-envelopes-flip) ## 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€’ **Privacy-First Design:** Security tint pattern shields sensitive check details from prying eyes during transit. - β€’ **Bulk-Ready Efficiency:** 500 envelopes per pack to power through high-volume mailing without pause. - β€’ **Speedy Flip & Seal Closure:** Self-adhesive flip-and-press seal lets you close envelopes in secondsβ€”no licking, no fuss. - β€’ **Durable 24 lb White Wove Paper:** Premium weight paper guarantees professional presentation and reliable handling for every mailing. - β€’ **Seamless QuickBooks Compatibility:** Precisely aligned double windows ensure flawless address visibility and reduce costly mailing errors. ## Overview Blue Summit Supplies #8 Double Window Security Envelopes come in a 500-count pack, crafted from durable 24 lb white wove paper with a confidential security tint to protect sensitive check information. Designed for QuickBooks check printing, their double window format ensures perfect address alignment, while the fast flip-and-seal adhesive closure streamlines mailing workflows for busy accounting and payroll teams. ## Description desertcart.com : Blue Summit Supplies 500#8 Double Window Security Envelopes, Flip & Seal | 3 5/8 x 8 11/16 in, Security Tint, Flip and Seal, for QuickBooks Checks, Business Mailings : Office Products ## 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, Security Tint, Self Sealing, Self-Adhesive Closure | | Best Sellers Rank | #3,335 in Office Products ( See Top 100 in Office Products ) #20 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 (1,453) | | Item Dimensions L x W | 8.7"L x 3.6"W | | Item Shape | Rectangular | | Item Weight | 16 ounces | | Manufacturer | Blue Summit Supplies | | 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:** AP, Business, Payroll ## Images ![Blue Summit Supplies 500 #8 Double Window Security Envelopes, Flip & Seal - Image 1](https://m.media-amazon.com/images/I/719vfSLraRL.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. --- ## 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/42050005-blue-summit-supplies-500-8-double-window-security-envelopes-flip](https://www.desertcart.at/products/42050005-blue-summit-supplies-500-8-double-window-security-envelopes-flip) --- *Product available on Desertcart Austria* *Store origin: AT* *Last updated: 2026-10-23*