3-7/8" x 8-7/8" ( 3.875" x 8.875" ), Regular Envelope, No Window, Recovery, 30% Post-Consumer Recycled Paper, Vellum Finish, Diagonal Seam, Flap Down, Remoistening Seal, 500 Qty / Box, 2500 Qty / Ctn, 6.5 lbs. per Box