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Postal Services

Envelopes


Letter-sized Envelope Specifications:

ParameterMinimum ValueMaximum Value
Width6.37" (162mm)10.50" (266mm)
Depth3.50" (89mm)6.50" (165mm)
Throat Depth.25" (6.35mm)Executive: 1.49" (37.846mm)

Other: 1.61" (40.894mm)
Paper Weight70 gsm90 gsm
Flap Depth1.20" (30mm)2.50" (63mm) with a +/- .25" (35mm) of center

1.85" (47mm) outside +/- .25" (35mm) of center
Curl/Wrap.0625" (3mm) measured while holding flap in flat surface at the crease line