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

Oversized, expandable, weather-resistant, Tyvek® envelopes with double windows for address coversheets.

Expanding, double window 1st Class Mail envelopes are made of ultra-durable Tyvek material to keep documents safe and secure. It expands a full 2-inches to accommodate even the larges of tax returns or important documents.

Simply print an address cover sheet with your tax software, slide it into the slipsheet holder in the front of the envelope and documents are ready to mail.

Get big discounts on larger quantities – no coupon required!

This double window envelope has the alternate window placement for improved delivery accuracy, ensuring that the post office reads the To: and From: addresses correctly.

It has cellophane windows for security and an inside ‘pocket’ keeps the address slip sheet in place, as well as a self-sealing flap for easy mailing.

Tax Software Compatibility: Creative Solutions™, UltraTax™, ATX™, CCH Prosystemfx™.

Minimum 50 / Multiples of 50.

Qty 50 - 99$3.10 ea
Qty 100 - 249$3.05 ea
Qty 250 - 499$3.03 ea
Qty 500 - 999$2.99 ea
Qty 1,000 - 20,000$2.98 ea

Product Details

Oversized, Expanding Tyvek Envelope with Alternate Double Windows and First Class Mail Insignia in Green

In stock and ready to ship! Easily mail very large tax returns or large documents in this official, first class mail envelope. It expands a full 2-inches to accommodate large tax returns or other important documents. Made of heavy-duty, Tyvek material, these envelopes are also water and weather resistant for the ultimate security!

Two large cellophane windows are offset for better delivery accuracy with the USPS, and align with address coversheets printed from CS UltraTax™, ATX™ or CCH Prosystemfx™ tax preparation software, or create your own address cover sheets.

Order as few as 50 envelopes and get big discounts on larger quantities.

Style: Portrait
Seal Type: Self-Sealing Flap
Size: 9″ x 12 ” x 2″
Paper Weight: 28# Tyvek
Flap Opening: Short End
Slipsheet Holder: front ‘pocket’ to hold slip sheet in place
Ink Color: Green
Text: First Class Mail

Top Window Size: 1 3/4″ x 5-1/2″
Top Window From Left Side: 1-1/8″
Top Window From Bottom: 8-7/8″

Bottom Window Size: 2″ x 6″
Bottom Window From Left Side: 2″
Bottom Window From Bottom: 4-3/4″

Tax Software Compatibility: CS UltraTax™, ATX™, CCH Prosystemfx™.

Item# 80386
(formerly item# PEF06)


There are no reviews yet.

Be the first to review “Expanding Tyvek First Class Mail Envelope with Alternate Windows – 9″ x 12″ x 2″”

Compatible or Companion Products…

  • UltraTax folder with alternate windows and 2 pockets, compatible with Creative Solutions tax software - DiscountTaxForms.com

    UltraTax Window Folder with Pocket

  • Tax Software Folder with Alternate Windows for UltraTax, Creative Solutions, ATX, CCH, Prosystemfx software - DiscountTaxForms.com

    Alternate Small Window Tax Folders with Pocket

  • Large Client Tax Return Mailing Envelope with Stars and Stripes Design, Portrait-Vertical Format - DiscountTaxForms.com

    Stars & Stripes Envelope – Center Double Window – 9-1/2″ x 12″