700 PACK - 700 count per box is a cost-effective choice for small businesses, offices, and homes with frequent mailing needs. And ensures that you have enough mailing envelopes to last for a while..SECURITY TINTED - Our #9 envelopes feature an interior security tint that ensures your content stays private during transit..DUAL WINDOW DESIGN - Each No.9 envelope contains two front windows, a 1-3/16" X 3-1/2" top window positioned 3/8" from the left and 2" from the bottom and the bottom 1" X 4" window 3/8" from the left and 1/2" from the bottom..EASY TO USE - No more licking envelopes! Our #9 double window envelopes feature a Peel & Seal closure(STRONG ADHESIVE STRIP)that requires no moisture, making it quick and easy to send your confidential documents securely..HIGH QUALITY - Made from 24 lb. white woven paper, envelopes are strong and durable. #9 secure envelope is perfect for mailing invoices and business statements.