Quick view Add to Cart ACCO Mead ACCO Mead Press-it Seal-It White Security Envelopes with Self-Adhesive Seal Bundle - No. #10 (4.125 x 9.5 inch, 135 Count) and No. #6- (3.5 x 6.5 inch, 165 Count) MSRP: Was: Now: $30.80