Letter Sized Mail Pieces

These requirements apply to things sent in an envelope, or pieces folded down to envelope size.

Letter-3

Measurements

  MIN MAX
Length 5″ 11.5″
Height 3.5″ 6.125″
Thickness .007″ (80# Cover) .25″
Folded-Letters

*Click to see larger image

Tabbing Self-Mailers

Letter-size mail pieces that are not in an envelope must be sealed or tabbed to prevent an open edge from jamming processing equipment. Standards for tabbing folded self-mailers are based on the way it is folded.

Measurements

  MIN MAX
Length 5″ 10.5″
Height 3.5″ 6.125″
Thickness .007″ (80# Cover) .25″

*Dimensions for a tabbed self-mailer are slightly smaller than regular letter specifications.

Two Tabs (Folded Edge on Bottom)

  • (2) 1″ Tabs
  • Tabs must be places within one inch of the right and left at the top of the mail piece
  • Mail Panel must be parallel to folded/stitched edge

Three Tabs (Stitched Books)

  • (3) 1.5″ Tabs
  • Tabs must be placed within one inch of the right and left at the top of the mail piece
  • Trailing edge must be secured with one tab
  • Mail Panel must be parallel to bottom edge