This crisp whitewove single window #9 envelope imprinted with your company info is a great single window envelope that has a gummed flap and a option to have your logo added at no additional cost. This envelope does not have security tint. Envelope size 8 7/8 x 3 7/8 Window size 4 1/2 x 1 1/8 Window placement 1/2 inch from bottom.