This double window invoice envelope is Security lined for confidentiality and is available in gummed or self seal. Save hours of addressing time with these convenient double window envelopes. Simply place your invoice inside the envelope and seal it for mailing.
Envelope size 9 x 4 1/8: Window size Top 3 1/2 x 7/8 Bottom 4x1: Winow placement: Top 7/8 from the top and 3/8 from the left. Bottom 1/2" from the bottom and 3/8" from the left. 13/16" between windows
