Booklet Envelopes - 6x9, 9x12, 10x13 | Open Side Envelopes


Shop for Booklet Envelopes and get FREE shipping. Choose from 6x9, 9x12, or 10x13. Ideal for mailing documents, catalogs, folders, and other materials. Booklet envelopes feature an open-side flap on the long side of the envelope and come in a wide variety of sizes and colors. Offered in white, manila, natural, and bold colors, these envelopes are a versatile mailing option that can fit a variety of needs. Common sizes to choose from include 6x9, 6 x 9 1/2, 6 1/2 x 9 1/2, 9x12, and 10x13. Booklet envelopes make it easy to insert thicker items or catalogs, through the wide opening.

Select a traditional Booklet envelope with a standard gum seal or check out different envelope styles and special features such as window, showcase window, or seal-seal. Looking for a more personalized look? Then check out our Custom Booklet envelopes. Include your company name, logo, or other artwork for a professional look that will impress your recipients. Use Booklet envelopes to send general mailings or marketing materials with confidence.


All 6x9 Booklet Envelopes


All 9x12 Booklet Envelopes


All 10x13 Booklet Envelopes


Catalog Envelopes

Looking for something else? We also offer Catalog envelopes, in the same sizes as Booklet. Our Catalog envelopes feature a flap on the short side as opposed to the Booklet style with the flap on the long side. Choose from a variety of popular sizes including 6x9, 6 1/2 x 9 1/2, 9x12, 9 1/2 x 12 1/2 and the 10x13 envelopes. Ideal for mailing catalogs, magazines, brochures, presentation folders, advertising materials, or important documents. Shop for Catalog envelopes.


Special Order Catalog Envelopes

Can't find the exact envelope color or style you're looking for? Although we offer a wide variety of envelopes, we know sometimes you need something unique. We have access to hundreds of envelope styles, sizes, and colors. We can often find exactly what you need, and get it to you quickly! Many of our special order items can ship same or next day. Contact us to learn more about how we can get you what you need, when you need it. Shop for Special Order Catalog 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.


Booklet Envelopes

Booklet Envelopes

If you're not sure what size you need, measure the length (width) and height of your shipping item. 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.

Booklet Envelopes

  • 6x9 Booklet Envelope - Fits up to a 5.85 x 8.85 insert. Typically used for small catalogs, brochures, or folded paper.
  • 6 x 9 1/2 Booklet Envelope - Fits up to a 5 3/4 x 9 1/4 insert. Commonly used for mailing brochures or folded paper
  • 6 1/2 x 9 1/2 Booklet Envelopes - Fits up to a 6.25 x 9.25 insert. Provides extra room for thicker 6x9 items.
  • 9x12 Booklet Envelope -Fits up to a 8.75 x 11.75 insert. Typically used for standard catalogs, or several sheets of paper.
  • 10x13 Booklet Envelope -Fits up to a 9.75 x 12.75 insert. Commonly used for larger catalogs, or with a 9x12 envelope.

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