4-1/4" x 6-3/4" ( 4.25" x 6.75" ), Baronial Envelope, No Window, Ultra-98, Bright White Sulphite Paper (98% Brightness), Vellum Finish, Diagonal Seam, Flap Down, Remoistening Seal, 250 Qty / Box, 2500 Qty / Ctn, 3.25 lbs. per Box