Columbian CO142 (#10) 4-1/8x9-1/2-Inch Grip-Seal Security Tinted White Envelopes, 45 Count Envelope is ideal for all business, professional and personal correspondence. Convenient and secure self-sealing Grip-Seal closure. Simply peel off release strip and press down for a quick, secure seal. Security tinted for added privacy and confidentiality. Premium 24lb white wove stock. (#10) 4-1/8" x 9-1/2" 45 envelopes