A9 Envelopes | Large Invitation Envelopes in Many Colors

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Order A9 Envelopes and get FREE shipping! Perfect size for mailing wedding or special event invitations, greeting cards or letters. Include your invitation or letter and also insert an RSVP card. A9 envelopes are often used to mail holiday cards, event invitations, announcements, or letters. The envelope can fit any insert measuring up to 5 1/2 x 8 1/2 inches or smaller. To use as a special event invitation envelope, include a smaller envelope such as an A1, A2, A4, A6, or A7 envelope. Include a small RSVP envelope as well as an invitation envelope.

Personalize your A9 Envelopes for your special event or party. Save time and provide a professional look for recipients. Add artwork and addresses by choosing the Printed option. Add custom designs to the A9 envelopes to create something special. We offer a large selection of A9 envelopes in a variety of colors. Choose from white or natural, bright Astrobright, or foil-lined envelopes. Use for a special occasion, or just for sending a larger card. A9 envelopes are available in standard or heavier paperweight and feature a large square flap with standard gum seal closure.

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A9 Invitation Envelopes

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Printed A9 Invitation Envelopes

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All Invitation Envelopes

We offer a wide selection of invitation envelopes in a variety of styles, sizes, and colors. We can personalize all envelopes to your exact specifications to make your event truly special. Shop Invitation envelopes.

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All Colored Envelopes

We offer a wide selection of colored envelopes in a variety of styles and sizes. If you are looking for a certain color, check out our colored envelopes here. Shop Colored 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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A9 Envelopes Size Guide

Not sure what size you need? Our guide can help you pick the right invitation envelope for you. As a general rule of thumb, you will want to select an envelope slightly larger than your insert, to make it easy to insert and remove your item. Depending on the thickness of your insert, you may need more or less room around the item.

  • A1 - 3 5/8 x 5 1/8 - Typically used for an RSVP envelope. Fits inside an A6, A7, or larger.
  • A2 - 4 3/8 x 5 3/4 - Typically used for an RSVP envelope. Fits neatly inside an A6, A7, or larger envelope.
  • A4 - 4 1/8 x 6 1/8 - Often used for 4x6 photos or invitations. Fits inside an A7, A8, A9 or A10 envelope.
  • A6 - 4 3/4 x 6 1/2 - Commonly used for invitations up to 4 1/2 x 6 1/4. Fits inside an A7, A8, A9 or A10.
  • A7 - 5 1/4 x 7 1/4 - Also known as a 5x7 envelope. Used for many standard cards and invitations.
  • A8 - 5 1/2 x 8 1/8 - Used as an outer envelope. Fits a card, invitation, or insert up to 5 1/4 x 8 inches.
  • A9 - 5 3/4 x 8 3/4 - Used as an outer envelope. Fits cards, invitations, or inserts up to 5 1/2 x 8 1/2.
  • A10 - 6 x 9 1/2 - Also known as a 6x9 envelope. Outer envelope which fits inserts up to 5 7/8 x 9 3/8.

Need Something Special?

If you need special envelopes, or a certain color, or paper, please Contact Us for more information. We have a variety of items available for special order, that are ready to ship in just a couple days.

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