Large First Class Envelopes
1st Class Mail window envelopes for client tax returns and official documents.
- First Class envelopes at big discounts – no coupon code needed!
- Double and single window envelopes
- Landscape and portrait layouts
- Many large sizes and formats
- Green or blue ‘first class mail’ insignias
- Great for tax returns or any official document
- In stock and ready to ship!
Have questions? Just ask!
We’re real people, ready to help.
Official first class mailing envelopes with windows for important documents at discount prices – no coupon needed.
Shop Easy with The Tax Form Gals!
Horizontal Landscape Format First Class Envelopes
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First Class Envelope, Landscape Style with Double Windows – 12″ x 9-1/2″
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Landscape First Class Mail Envelope, Double Window, Confidential Text – 11-1/2″ x 9-1/2″
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Oversized Landscape First Class Mail Envelope with Double Windows – 13″ x 10″
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Landscape First Class Mail Envelopes with Smaller Top Window – 9-1/2″ x 11-1/2″
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Large First Class Mail Envelope, Landscape Style with 2 Windows – 11-1/2″ x 9-1/2″
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First Class Envelope, Landscape Style with 2 Windows, Long-Side Open – 11-1/2″ x 9-1/2″
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First Class Mail Envelope, Landscape, Double Windows – 11-1/2″ x 9-1/2″
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Large Blank Double Window Envelopes, Landscape – 11-1/2″ x 9″
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Tailored Income Tax Return Envelopes – 13″ x 10″
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Landscape First Class Mail Envelope with Smaller Top Window – 11-1/2″ x 9-1/2″
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Small First Class Mail Envelope, Double Windows – 6″ x 9″
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“Important Information Enclosed” Large Envelope – 10×13
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“Confidential” Top Double Window Envelopes, Landscape – 12″ x 9-1/2″
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Tyvek First Class Mail Envelopes – 10″ x 13″
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Expandable Landscape First Class Mail Envelope, Double Window, Confidential Text – 9-1/2″ x 12″ x 1″
Document Privacy Stamp
Mask sensitive information easily with this self-inking stamp!
Quickly covers sensitive information, signatures, account numbers and more for an added layer of security.
Double Window First Class Envelopes – Vertical Portrait Format
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Double, Center Windows First Class Mail Envelope – 9-1/2″ x 12″
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First Class Mail Envelope with Offset Windows – 9-5/8″ x 11-1/8″
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First Class Mail Envelope with Alternate Windows – 9-1/2″ x 12″
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First Class Mail Envelope with 2 Top Windows – 9-1/2″ x 11-1/2″
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Stars & Stripes Envelope – Center Double Window – 9-1/2″ x 12″
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Large Blank Envelopes with 2 Center Windows – Portrait Style – 9-1/2″ x 12″
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First Class Envelope with Small Top and Large Window – 9-1/2″ x 11-1/2″
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First Class Mail Envelope with 2 Center Windows – 9-1/2″ x 11-1/2″
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Large, Blank Double Window Envelope with Alternate Window Placement – 9-1/2″ x 12″
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Expanding Tyvek First Class Mail Envelope with Alternate Windows – 9″ x 12″ x 2″
Single Window First Class Envelopes
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Income Tax Return Envelope with 1040 Window – 9-1/2″ x 11-1/2″
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First Class Envelope with Single Center Window – 9-1/2″ x 12″
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First Class Envelope with Single Window – 9-1/2″ x 11-1/2″
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Stars & Stripes Tax Envelope with Single Top Window – 9-1/2″ x 11-1/2 “
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Important Tax Information Envelope with Window – 9-1/2″ x 11-1/2″
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First Class Mail Envelope with Single Center Window, Green – 9-1/2″ x 11-1/2″
Software-Compatible Tax Envelopes
