Use this First Class Mail single window envelope with a Peel and Close flap to easily mail any tax return or report. A blue interior tint adds security while the cellophane window allows the taxpayer name and address to clearly show through. Style: Portrait Envelope Size: 9 1/2 x 12 Top Window Size: 2 x 6 Top Window From Left Side: 2 Top Window From Bottom: 4 13/16 28lb White Wove stock Inside Tint: Blue Flap Opening: Short Seal: Peel & Close Quantity discounts built into pricing. Additional Details ------------------------------ Package quantity: 1