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Parts of an Envelope

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Envelope Styles
Envelope Styles

Most envelopes fall into one of these six styles.

Although envelopes can be custom-ordered in any almost any size, there are numerous standard styles, each with its own standard sizes.

The size and shape of the flaps and type of seams combine to form six main types of envelopes used for the bulk of non-specialty applications.

  • A-Style or Announcement Envelopes
    Open side envelopes with square, often deep flaps and side seams. Sometimes with deep pointed flaps and diagonal seams.

  • Baronial Envelopes
    Open side, almost square envelopes with pointed flaps and diagonal seams.

  • Booklet Envelopes
    Open side envelopes with small square flaps and side seams.

  • Catalog Envelopes
    Usually open end envelopes with wallet style flaps and center seams.

  • Commercial Envelopes
    Open side envelopes with commercial style flaps and diagonal seams. The typical #10 envelope for business and personal mail is a commercial style envelope. The Monarch is a variation of the #7 3/4 envelope but with pointed flap.

  • Square Envelopes
    Large square flaps and side seams.

      The links for each style go to a gallery showing the relative size of different envelopes along with dimensions for common envelopes sizes and their enclosures.

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