These double window security envelopes are a boon for offices when you need to send out a large quantity of mails to various people in a standard format. Once you have aligned the sender and recipient’s name according to the dual transparent windows you can just slip in the mail and seal the envelope, removing the tedious process of writing the address completely.

Designed especially to work with our product #C489, these envelopes will help you save time and effort in more ways than one and also assist in maintaining a professional look for all the mails that go out of the office.