Custom Window Envelopes | Printed Window Envelopes in Many Sizes


Order Custom Window Envelopes and get FREE shipping! Personalize window envelopes with company logos, return address, or other artwork. Adding unique designs provides an easy way to ensure your organization is remembered. Save time and include your company branding to help your envelope stand out in the mail. Simply choose the right envelope, upload your artwork, and check out. You will get a PDF proof before printing to ensure we will create a custom printed product you'll love!


Custom Window Envelopes are ideal for business communication, non-profit or personal use. Offer recipients a glimpse into envelope contents through the transparent Poly-film window. Customize these envelopes and use for direct mail campaigns, or sending brochures, catalogs and more. Available in a variety of popular sizes including #6 3/4, #7 3/4, #8 5/8, #9, #10, #11, #12, 6x9 and 9x12 sizes. Custom window envelopes can be printed in one or two color, or choose full-color to showcase your artwork.

Custom Window Envelopes

Custom Window Envelopes


Business Window

Order custom envelopes suited for business communication. Print your company logo, social media accounts or advertising information directly onto your envelopes. We offer a variety of styles and colors so finding envelopes you love is easy. Shop Business Window Envelopes.


Double Window

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.


Custom #10 Window Envelopes

This is the most common size window envelope. Ideal for sending letters, invoices or other items. Stand out from the crowd by adding an extra touch of design to your envelopes. Available in a variety of colors and styles. Shop Custom #10 Window Envelopes


6 x 9 Window Envelopes

Use custom 6x9 window envelopes for business, non-profit or personal use. Ideal for everyday mailings or sending small brochures or catalogs. Conveniently sized to fit a standard 8 1/2 x 11 sheet of paper folded in half. Shop Custom 6x9 Window Envelopes.


9 x 12 Window Envelopes

Find custom envelopes with dimensions suited for your mail. Standard sized mailing envelopes perfect for sending larger items. We offer a variety of styles and colors so finding envelopes you love is easy. Shop custom 9x12 Window Envelopes.


Blank Window Envelopes

Looking for regular window envelopes? We have a wide variety of popular styles and sizes to choose from. Available in standard gum flap or self seal, with or without a security tint, we're sure to have the envelope you need. Shop blank Window Envelopes.


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.

Custom Window Envelopes

Custom 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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