First Class Envelopes
Large, 1st class mail window envelopes for client tax returns and official documents.
- Official First Class Mail envelopes with insignias
- Many large sizes and formats
- Ideal for large documents
- Compatible with tax software coversheets
- Great for tax returns, business documents and much more
Official First Class Mail envelopes make it easy to mail tax returns and important documents with ease!
Double Window First Class Envelopes
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First Class Envelope, Landscape Style with Double Windows – 12″ x 9-1/2″
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First Class Mail Envelope with Offset Windows – 9-5/8″ x 11-1/8″
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Center Double Window First Class Mail Envelope – 9-1/2″ x 12″
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Stars & Stripes Patriotic Envelope – Double Windows – 9-1/2″ x 12″
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First Class Mail Envelope, Landscape, Alternate Windows, “Confidential” – 11-1/2 x 9-1/2
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Landscape First Class Mail Envelope with Alternate Double Windows – 13″ x 10:
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First Class Mail Envelope, Portrait Style with Offset Windows – 9-1/2″ x 12″
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First Class Mail Envelope, Landscape with 2 Windows – 9-1/2″ x 11-1/2″
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First Class Mail Envelope with 2 Top Windows – 9-1/2″ x 11-1/2″
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First Class Mail Envelope – 6 x 9
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First Class Mail Envelope with 2 Center Windows – 9-1/2″ x 11-1/2″
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Blank Envelope with Alternate, Double Windows – 9-1/2″ x 12″
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Blank Envelope – Portrait Style with Double Window – 9-1/2″ x 12″
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Large Landscape First Class Mail Envelope with 2 Windows (Smaller Top Window) – 11-1/2″ x 9-1/2″
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First Class Envelope, Landscape Style with 2 Windows
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Large Landscape First Class Envelope with Two Windows – 11-1/2″ x 9-1/2″
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First Class Envelope Portrait Style with 2 Windows – Green
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Expanding Envelope with Alternate Windows – Tyvek
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Fist Class Mail Envelope, Landscape Style with Double Windows – 11-1/2″ x 9-1/2″
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Large First Class Mail Envelope, Landscape Style with Alternate Windows – 11-1/2″ x 9-1/2″
Single Window First Class Envelopes
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Stars & Stripes Client Tax Envelope – Single Top Window – 9-1/2″ x 11-1/2″
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Single Window, Portrait Style First Class Mail Envelope – 9-1/2″ x 11-1/2″
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First Class Envelope – Portrait Style with 1 Window – 9-1/2″ x 11-1/2″
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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 – Portrait Style with One Center Window – 9-1/2″ x 12″
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Important Tax Information Envelope with Window
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First Class Envelope – Portrait Style with Single Window, Green – 9-1/2″ x 11-1/2″
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First Class Mail Envelope, Portrait with Single Center Window, Green – 9-5/8″ x 11-1/8″
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Landscape Single Window First Class Mail Envelope
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Patriotic Tax Envelope with Window – 9-1/2″ x 11-1/2″
Software-Compatible Tax Envelopes
