Window Envelopes

Get the perfect fit for your form or document. Choose from the largest selection of single window envelopes and double window envelopes in stock and ready to ship. We offer a wide selection of sizes, as well as colors. Want to customize your window envelopes? You can add custom printing and self seal to any of our sizes.

Window Envelopes Sizing

If you are unsure of the size window envelope you will need, first measure your insert. To ensure proper fit, it is best to choose an envelope that is 1/16" to 1/8" larger than your insert.

Catalog Window Envelopes

Catalog Window Envelopes

Catalog window envelopes are great for mailing letters and important documents without folding. They are available with self seal and inside tint for security.

  • 9 x 12 - Fits a standard 8 1/2 x 11 sheet of paper with 1/4-1/2 inch extra on the sides.

Booklet Window Envelopes

Booklet Window Envelopes

Booklet window envelopes can show off what's inside or just allow the addressee to show in the window.

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

Double Window Envelopes

Double Window Envelopes

Double window envelopes are great for showing both the return address and the addressee's address and are in stock and ready to ship. Available with window sizes and positions that are compatible with most popular software packages. We stock more double window sizes and styles than anyone!

Special Window Envelopes

Special Window Envelopes

Special window envelopes are great for showing the addressee's address and are in stock ready to print your return address in the upper left. Available with window sizes and positions that are compatible with most popular software packages. We stock more special window sizes and styles than anyone!

Standard Window Envelopes

Standard Window Envelopes

Standard window envelopes are the most popular style window envelopes used in business and everyday mailings. They are usually printed with a return address in the upper left corner and the addressee shows through the window.

  • #6 3/4 (3 5/8 x 6 1/2) - Fits a personal check.
  • #8 5/8 (3 5/8 x 8 5/8) - Ideal for printed commercial or business checks.
  • #9 (3 7/8 x 8 7/8) - This size fits comfortably inside a standard #10 envelope, so is often used as a return 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 than 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.

Full View Window Envelopes

Full View Window Envelopes

Full view window envelopes have a large window centered on the face of the envelope. They are great for showing off what's inside!

CD/DVD Envelopes

CD/DVD Envelopes

CD/DVD window envelopes will help protect your media collection. The circular window lets you see what's inside.