3-1/8" x 5-1/2" ( 3.125" x 5.5" ), Open End Coin Envelope, No Window, Western Sulphite, White Kraft Paper, SFI Certified, Vellum Finish, Center Seam, Flap Down, Remoistening Seal, 500 Qty / Box, 5000 Qty / Ctn, 3.5 lbs. per Box