6-1/8" x 9-1/2" ( 6.125" x 9.5" ), Open Side Booklet Envelope, No Window, Velpine, White Kraft Paper, SFI Certified, Vellum Finish, Side Seam, Flap Down, Remoistening Seal, 500 Qty / Box, 2500 Qty / Ctn, 12 lbs. per Box