Classic Crest A1 Square Flap Envelopes - 250 Pack (Classic Natural White) Envelope size: A1(3 5/8 x 5 1/8) Envelope size: A6 (4.75" x 6.5"); QUANTITY: 50 envelopes Paper Weights: 32/80# text -- 118 gsm Printing Compatibility: Laser, Inkjet Quantity: 250 envelopes per box