Single Window Check Envelopes with Inverted Gummed Flap 

• This single window check envelope is Security lined for confidentiality and has a standard gummed flap for closure . Save hours of addressing time with these convenient double window envelopes. Can be used with machine inserters as the flap is inverted  commonly used for bottom of page checks with machine insert  If you are looking for a self seal closure double window envelopes please search item # dbl-envelopevss or search the words double window self seal in the search box.