Office Depot Clean Seal(TM) Envelopes, 10 (4 1/8in. x 9 1/2in.), White, Box Of 500, 12014 Simply peel off the release strip and press  no moisture required! Ideal for all general mailings. Made of crisp 24-lb white wove for a substantial feel. Durable 2-sided seam construction resists tearing.