Expanding Envelopes

  • Expanding First Class Mail Envelope with Alternate Windows Tyvek. Compatible with Creative Solutions, UltraTax, ATX, CCH and Prosystem software.

    Expanding Tyvek First Class Mail Envelope with Alternate Windows – 9″ x 12″ x 2″

  • Expanding First Class Mail Envelope Landscape Style Double Window Confidential Text 80343EXP - DiscountTaxForms.com

    Expandable Landscape First Class Mail Envelope, Double Window, Confidential Text – 9-1/2″ x 12″ x 1″