5 Star DL Window Wallet Envelope Self Seal 80gsm 220x110mm White (Pack of 1000) M900255 Star white DL envelopes. These envelopes have a blue opaque interior for security. They also feature a window which allows you to clearly display the address of your correspondent. Made from 80gsm paper, these envelopes are lightweight and perfect for everyday use. DL size 110x220mm Made from lightweight 80gsm paper Window size of 39x93mm Window position 19mm in from LHS, 18mm up Self seal closure contains a strip of gum on each flap which when