Open Side Expansion Booklet Envelopes, 10″ x 15″, 40#, Tan / Brown Kraft, Pressure Sensitive Seal (Box of 250). 10″ x 15″ x 2″, Open Side Expansion Booklet Envelope, No Window, Roptex, Tan/Brown Kraft Paper, Paper Color: Tan/Brown, SFI Certified, Vellum Finish, Center Seam, Flap Down, Kwik-Tak, 250 Qty / Box, 250 Qty / Ctn, 34 lbs.