you to show both the mailing address and return address through the front of the envelope. the top window measures 1 1/4" x 4" and is 1/2" from the left and 11/16" from the bottom of the envelope. the bottom window measures 1 1/4" x 4" and is 1/2" from the left and 2 3/16" from the bottom of the envelope. this saves you money since you won't need to print the return address.
top window size 1 1/4" x 4"
bottom window size 1 1/4" x 4" 