3-5/8" x 6-1/2" ( 3.625" x 6.5" ), Cellophane Window Envelope, A Style Window 1-1/8" x 4-3/4" Window Size, 3/4" From Left, 7/16" From Bottom, Western Sulphite, White Sulphite Paper, SFI Certified, Vellum Finish, Diagonal Seam, Flap Down, Remoistening Seal, Blue Wesco Tint, 500 Qty / Box, 5000 Qty / Ctn, 4.5 lbs. per Box