Prime Business Checks 500 Self Seal Double Window Security Tinted Envelopes Designed for Business Checks, QuickBooks, Laser Checks Security Tinted Self adhesive Peel and Seal White Size 3 5/8" x 8 11/16" (Checks Will Not Move) 24 LB 500 Per Box, Designed To Fit Computer business checks, QuickBooks checks, Envelope is ideal for all business, professional and personal correspondence, Peel & Seal Flap: No water required. Peel strip and fold flap, then press for a quick, secure seal, Premium 24 LB - Color: White - Finish: Smooth/Wove , Self Seal Double Window, Security tinted for added privacy and confidentiality. 92663 envelope