4 1/8 x 9 1/2" - #10 Window Redi-Seal Business Envelopes with Security Tint

#10 Redi-Seal business envelopes combine a pressure-sensitive adhesive closure with a clear poly window and interior security tint lining — three features that together address speed, addressing efficiency, and content privacy in a single envelope format. The 24 lb white woven stock carries an 84-brightness rating, producing a clean, professional appearance on both the envelope face and any printed inserts visible through the window.

The clear poly window is sized for a standard address block, eliminating hand-addressing in billing departments, accounts payable operations, insurance correspondence, and high-volume statement or invoice mailings. Print shops running variable-data jobs and fulfillment centers processing outbound transactional mail benefit from the consistent, no-label addressing workflow this format enables.

The Redi-Seal strip seals under firm finger pressure with no moisture required, supporting fast sealing at the inserter or manual folding station. Each case contains 2,500 envelopes and ships via parcel carrier.