5-1/4" x 7-1/4" ( 5.25" x 7.25" ), Announcement Envelope, No Window, Ultra-White, Bright White Sulphite Paper (96% Brightness), SFI Certified, Vellum Imaging Finish, Side Seam, Flap Down, Remoistening Seal, Packaged in a Rigid, Non-Collapsible, Wrapped Box, 500 Qty / Box, 2500 Qty / Ctn, 8 lbs. per Box