First Class Envelope 9-5/8" x 11-1/8" - Peel & Seal

First class catalog mailers offer a wide variety of mailing options. This particular window envelope is software compatible to be used with CCH ProSystem fx software packages. It has a portrait catalog orientation for the documents to be inserted, with the flap opening on the short side. First class mailer window envelopes simplify mailing by printing the cover sheet and having the recipient and return addresses show through the envelope windows. This envelope has a peel and seal closure, as well as first class mail and diamond border imprinted in green on the envelope. Double window first class mailer envelopes measure 9-5/8" x 11-1/8", and open on the short side.