Postmaster DL Envelope 114x235mm Window Gummed 90gsm White (Pack of 500) B29153Made from bright 90gsm white paper, these Postmaster envelopes have been designed for, and tested on, all known makes of mailing machine, from desktop to full scale. They feature an oversized format for easier insertion of letters and a gummed flap designed for automatic sealing. A clear window allows a name and address printed on the letter to be clearly seen for ease of posting. This pack contains 500 DL envelopes. Wallet envelope with address