Blank, #9, long flap, white, remittance envelopes. Envelopes measure 8 7/8 inches x 3 7/8 inches, closed, and features a long, 3 1/2 inch flap for personal information, such as credit card information, that is hidden when the envelope is sealed. Pricing includes white envelopes per thousand (EX: Ordering a quantity of 1 = 1000 envelopes, 2 = 2000 envelopes, etc.). These envelopes fit into a #10 envelope and come flat for printing. Minimum order of 1000.