3-3/4" x 8-5/8" ( 3.75" x 8.625" ), Double Window Envelope, Top Window 7/8" x 3-1/2" Window, 5/16" From Left, 2-5/16" From Bottom; Bottom Window 1" x 4" Window, 3/4" From Left, 11/16" From Bottom, White Wove Paper, Remoistening Seal, Blue Woodgrain Tint, 500 Qty / Box.