#10 Postage Meter Window Envelopes, 4-1/8" x 9-1/2", 24# White, Diagonal Seam, Blue Wesco Tint, Poly Window (Box of 500)

4-1/8" x 9-1/2" (4.125" x 9.5"), Postage Meter Window Envelope, 1-1/8" x 4-3/4" Window, 4" From Left, 2-1/2" From Bottom, Western Sulphite, White Sulphite Paper, SFI Certified, Vellum Finish, Diagonal Seam, Flap Down, Remoistening Seal, Blue Wesco Tint, 500 Qty / Box, 2500 Qty / Ctn, 7 lbs. per Box