Envelopes

Measuring Envelopes

Considering the flap position is the first step in measuring your envelopes.

  • Always measure an envelope with the flap at the top
  • Envelope size is always stated in inches with the shortest dimension first
  • The overall size is measured from the top fold to the bottom fold and from one side fold to the other
  • Flap length is measured from the top fold score line to the tip of the flap
  • Seal gum is measured from the edge of the seal flap to where the gum line stops
  • Throat depth is measured from the top fold score line to the top of the bottom flap
  • Side flap is measured from the side fold to its farthest point at the envelope center

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