Measuring 3 5/8 x 8 11/16 inches, this #8 double-window envelope is perfectly sized to accommodate standard checks and folded voucher-style documents. Its dual-window design aligns precisely with standard check layouts, displaying only the sender's and recipient's address information meanwhile, the envelope's internal security tint effectively obscures the check's monetary amount and memo line contents, ensuring information privacy. The envelope features a ""peel-and-seal"" self-adhesive strip that provides a quick and secure closure, significantly reducing the time required for envelope sealing during payroll processing and vendor payment workflows. Constructed from 24-lb paper stock and featuring durable window film, this product comes in packs of 500 envelopes, offering a stable and reliable supply for various recurring payment tasks. Weight: 5.24 lbs.