JAM PAPER 9 x 12 Booklet Strathmore Envelopes - Natural White Wove - 50/Pack Natural White Wove Envelope Size: 9 x 12 inches Quantity: 50 Envelopes per Pack This Envelope is fashioned from high quality 28 lb paper and has a Straight Flap that is Gummed Perfect for Greeting Cards, Invitations, Weddings or any announcement.