Self Seal Envelopes | Self Adhesive Envelopes for Business

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Order Self Seal Envelopes and get FREE shipping. These self adhesive envelopes feature a convenient mess-free peel off strip. We offer a wide selection of self seal envelopes in a variety of styles and sizes to choose from. Use self seal envelopes for everyday mailings, both regular and large, in your business or for special events. The self seal strip makes mailing easy. To use, simply peel back the self adhesive strip, close, and mail.

We offer a variety of envelopes with this self seal strip, making it easy to find the perfect envelope for your mailing needs. We offer self seal business envelopes, large self seal envelopes, and invitation envelopes with a self seal as well. Personalize your self seal envelopes by adding your logo, return address or other artwork.

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Self Seal Envelopes

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Large Self Seal Envelopes

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Invitation Self Seal Envelopes

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#10 Self Seal Envelopes

No 10 Self Seal Envelopes are the most commonly used business envelope with a self seal. We offer a variety of #10 envelopes in a variety of styles to choose from. Looking for self seal envelopes with windows and security tints? We've got you covered. These envelopes fit a standard 8 1/2 x 11 sheet of paper, folded into thirds. Shop for No 10 Self Seal Envelopes.

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Window Envelopes

Window envelopes are great for mailing letters, checks, invoices or any business correspondence with a pre-printed mailing address. Use window envelopes to display the recipient's name and address without printing on the envelope itself. The poly film on the front allows pre-printed information to show through. Shop for Window envelopes.

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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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Self Seal 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 than 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. The most popular sizes of self seal envelopes are #9, #10, and 9x12. #9 and #10 envelopes are perfect for mailing business communication, while the 9x12 is great for mailing larger items.

Standard Self Seal 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 inches.
  • #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 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 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.

Large Self Seal 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 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.
  • 10 x 13 (Exactly 10 x 13 inches) - Fits a standard 8 1/2 x 11 sheet of paper with extra space. Ideal for presentation folders, magazines, catalogs, booklets, and other large mail items.

Self Seal Invitation Envelopes

  • A2 Self Seal Invitation (4 3/4 x 5 3/4) - Fits perfectly into an A6 or an A7. Use as a reply or RSVP envelope.
  • A7 Self Seal Invitation (5 1/4 x 7 1/4) - Fits a 5x7 card perfectly.
  • 7 1/2" Self Seal Square (7 1/2 x 7 1/2) - Fits up to a 7 1/4 x 7 1/4 inch card perfectly.

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