First Class Mail Envelope with 2 Center Windows – Blue

A large, “Official First Class Mail” envelope with 2 windows.

This double-window envelope makes it easy to mail large documents and tax returns with an address cover sheet.

With a 9-1/2″ x 11-1/2″ size, the envelope easily mails stores large documents with many pages.

The windows are standard size and placed in the center of the envelope. Both windows have cellophane for security.

Tax Software Compatibility: ProSeries™

Minimum 50 / Multiples of 50.