First Class Envelope – Portrait Style with Center, Single Window

A large, “Official First Class Mail” envelope with single center window.

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

This envelope is a bit oversized, 9-1/2″ x 12″, to easily accommodate large documents with many pages. It has a cellophane window for security.

Tax Software Compatibility: ATX™, CS UltraTax™

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Product Details

9-1/2″ x 12″ First Class Mail Envelope

This large, first class mail envelope has a single window, near the center of the front.

It is in a portrait layout and has blue ‘first class mail’ triangle icons printed along the edges and FIRST CLASS MAIL printed near the bottom.

Style: Portrait
Seal Type: Self Seal or Moisture Seal
Size: 9.5″ x 12″
Paper Weight: 28#
Flap Opening: Short End

Window: Single, Cellophane
Top Window Size: 2″ x 6″
Top Window From Left Side: 2″
Top Window From Bottom: 4-13/16″

Tax Software Compatibility: ATX™, CS UltraTax™

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