3-7/8" x 8-7/8" ( 3.875" x 8.875" ), Double Window Envelope, Top Window 7/8" x 4" Window, 3/8" From Left, 2-5/16" From Bottom; Bottom Window 7/8" x 4" Window, 3/8" From Left, 1/2" From Bottom, White Wove Paper, Quick Stick Seal, Blue Woodgrain Tint, 500 Qty / Box.