These envelopes display both the return address and the mail-to address. The top window is 1 1/8"" x 3 1/2"" and placed 3/8"" from left side, 2"" bottom. The lower window is 1"" x 4"" and placed 3/8"" from left side, 1/2"" from bottom. Envelopes are 24 lb. white wove, high-quality with gum seal and strong seams. Security tinted layer included.
