4-5/8" x 6-3/4" ( 4.625" x 6.75" ), Open End Catalog Envelope, No Window, Western Sulphite, White Kraft Paper, SFI Certified, Vellum Finish, Center Seam, Flap Down, Remoistening Seal, 500 Qty / Box, 2500 Qty / Ctn, 5.5 lbs. per Box