Double Window Invoice Envelope

• This double window gummed  invoice envelope is Security lined for confidentiality. Save hours of addressing time with these DF9308C convenient double window gummed invoice 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