Window Envelopes | Double & Single Window Envelopes in Many Sizes

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Order Window Envelopes and get FREE shipping! Perfect for sending pre-printed letters, checks, invoices, statements, or other documents. Transparent Poly-film window offers recipients a glimpse into envelope contents. These envelopes are a wonderful choice for business communication. We offer a variety of styles and colors so finding the perfect envelope is easy. Available in #6 3/4, #7 3/4, #8 5/8, #9, #10, #11, #12, 6x9 and 9x12 sizes. If a standard design does not suit your needs, we can work with you to create a custom-made window envelope.

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Perfect for sending a variety of business documents. A window envelope is ideally suited for sending letters, invoices, or other items with a pre-printed mailing address. Depending on the size selected, you can also use these for direct mail campaigns, brochures, catalogs and more. With a variety of sizes and styles available, you're sure to find the exact window envelope you need. These envelopes can be used for business, church, nonprofit, or personal use. Personalize your window envelopes by adding a return address, logo, website, or other information.

Window Envelopes

Window Envelopes

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Business Window Envelopes

Order envelopes suited for business communication. Sizes including #6 3/4, # 7 3/4, #8 5/8, #9, #10, #11, #12 envelopes. Ideal for interoffice use. We offer a variety of styles and colors so finding envelopes you love is easy. Shop Business Window Envelopes.

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Double Window Envelopes

Perfect for sending checks or invoices. Available in popular sizes, with standard gum flap, or self seal -- double window envelopes are a staple in most offices. Ideal for pre-printed checks or statements from popular accounting software. Shop Double Window Envelopes.

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#10 Window Envelopes

#10 Window Envelopes are conveniently sized to fit most business mailings. Ideal for checks, invoices, order forms or any 8 1/2x11 document folded into thirds. Sealing options include a standard gum flap or self sealing.
Shop #10 Window Envelopes.

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6 x 9 Window Envelopes

Use 6x9 window envelopes for business, non-profit or personal use. Ideal for everyday mailings or marketing campaigns. Also perfect for mailing pre-printed letters or forms. Conveniently sized to fit pamphlets, brochures and more. Shop 6x9 Window Envelopes.

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9 x 12 Window Envelopes

Use 9x12 window envelopes to mail letters, catalogs, booklets, brochures, or thicker documents. Use the standard version for mailing regular items, or choose the security tint lining to help hide sensitive information when needed. Shop 9x12 Window Envelopes.

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Printed Window Envelopes

Looking to customize your envelopes? Send in your company logo, contact information or original artwork and we will print them directly on your envelopes. Add an extra touch of design to everyday mail.
Shop Custom Window Envelopes.

NEED HELP?

Not finding what you need? Have a question about a printed order? We would love to see if we can make your order - and life - a little bit easier.

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If regular Custom Envelopes aren't enough, we can get creative. If you need something special, we can create custom-made envelopes to your exact specifications. Choose all of the features you need to make something unique. Quantities start at only 1,000 envelopes. Order Custom Made Envelopes.

Window Envelopes

Window Envelopes - Size Guide

If you're not sure what size you need, measure the length (width) and height of your document and/or check. You'll want to choose an envelope that is at least 1/16" or 1/8" larger then your insert, to make sure it fits.

Not sure what size you need? Our size guide can help you pick the right envelope, for the right reason.

Standard Business Window Envelopes

  • #6 3/4 (3 5/8 x 6 1/2) - Fits a personal check, plus a small insert - up to 3 1/2 x 6 1/4.
  • #7 3/4 (3 7/8 x 7 1/2) - Slightly larger then a #6 3/4. Often referred to as a Monarch envelope.
  • #8 5/8 (3 5/8 x 8 5/8) - Ideal for many printed commercial and business checks.
  • #9 (3 7/8 x 8 7/8) - Return envelope. Fits comfortably inside a standard #10 envelope.
  • #10 (4 1/8 x 9 1/2) - Standard business envelope. Fits an 8 1/2 x 11 piece of paper folded in thirds.
  • #11 (4 1/2 x 10 3/8) - Larger then a standard #10 envelope. Can fit a check and folded documents.
  • #12 (4 3/4 x 11) - Large business envelope. Often used for mailing special checks or statements.

Larger Window Envelopes

  • 6 x 9 (Exactly 6 x 9 inches) - Fits a standard 8 1/2 x 11 piece of paper folded in half. Ideal for small catalogs.
  • 9 x 11 1/2 (9 wide x 11 1/2 tall) - Fits an 8 1/2 x 11 sheet of paper (or several) with 1/4 inch extra on all sides.
  • 9 x 12 (Exactly 9 x 12 inches) - Fits a standard 8 1/2 x 11 sheet of paper with 1/4-1/2 inch extra on the sides.

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