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    • Envelope Size Guide

    Not sure exactly what you’re looking for? The following is a list of common envelope uses, categorized by section and size. Certain envelopes serve different purposes, so let us help you find the exact one that fits your needs!

    View or download our Envelope Size Guides!

    Business Envelope Sizes  Invitation Envelope Sizes

     

    BUSINESS

    #6 3/4, #7, #7 3/4

    ∙ Small invoices
    ∙ Personal checks
    ∙ Donations
    ∙ Small business reply

    Shop Custom # 6 3/4 Envelopes

     

     

    #8 5/8, #9

    ∙ Invoices
    ∙ Return envelopes
    ∙ Check mailing
    ∙ Personal correspondence ∙ Newletters∙ Personal correspondence ∙ “Thank you” notes

    #10

    ∙ Most common size of mailing envelope

    ∙ Everyday mailings
    ∙ Invoices
    ∙ Can hold smaller return envelopes

    Shop Custom #10 Envelopes

     

    #11, #12, #14

    ∙ Documents
    ∙ Letters
    ∙ Holds #10 and smaller

     

    LARGE

    6 x 9, 6 1/2 x 9 1/2, #6, #9 3/4

    ∙ General mailings
    ∙ Advertisements/Marketing ∙ Jumbo cards

    Bubble-lined/Poly Bubble

    ∙ Useful for mailing or storing fragile items that require extra protection

    First Class Borders

    ∙ Tyvek material keeps envelopes from tearing in transit

    ∙ Large documents

    Shop Custom 6x9 Envelopes

     

    9 x 12, 10 x 13

    ∙ General mailings

    ∙ Advertisements/Marketing ∙ Jumbo cards

    Shop Custom 9x12 Envelopes

    Shop Custom 10x13 Envelopes

     

    Expansive

    This envelope’s ability to expand allows for it to fit larger quantities of documents, magazines, or brochures

    ∙ Bulky materials

    ∙ Magazines & catalogs ∙ Important documents

    Tyvek

    ∙ Tyvek material keeps envelope from tearing in transit ∙ Great for bulky mailings you want to be sure will reach their destination safely

     

    A1 ∙ Used for response/RSVP cards or “thank you” cards

    reach their destination safely

    A8 ∙ Popular size for holiday cards and other greeting cards

    ∙ Great for holiday cards, party invites, announcements, & more

    A9 ∙ Popular size for holiday cards and other greeting cards

    ∙ Fits a 5 1/4” x 7 7/8” card

    ∙ Fits a 5 1/2” x 8 1/2” card

    ∙ A1 Fits a 3 1/2” x 5” card A2 ∙ A2 Holds a standard A2 card or other 4 1/2” x 5 1/2” card

    A4 ∙ Used for birth announcements, photos, holiday cards, or “save the dates”

    1. A6  ∙ Used as an inside envelope for A7 wedding invites or smaller wedding invitations

    2. A7  ∙ Common wedding invitation envelope size

      ∙ Great for holiday cards, party invites, announcements, & more

    ∙ Fits a 4” x 6” photo or card ∙ Fits 4 1/2” x 6 1/4” card
    ∙ Fits 5” x 7” card

    A10

    ∙ Can fit A8 or A7 inside

    ∙ Good for oversized greeting cards or invites, personal correspondence

    ∙ Used for multiple pieces of information mailed together

    ∙ Fits a folded 8.5” x 11” letterhead

     

    Square ∙ Specifically designed for square invitations of varying sizes