Use this "First Class Mail" alternate window envelope to mail any tax return or report. A blue interior tint adds security while the cellophane window allows the taxpayer name and address to clearly show through.

Specifications

Style: Portrait Seal Type: Self-Adhesive Flap Size: 9.5" x 12 " Top Window Size: 1 3/4" x 5 1/2" Top Window From Left Side: 1 1/8" Top Window From Bottom: 8 7/8"

Bottom Window Size: 2" x 6" Bottom Window From Left Side: 2" Bottom Window From Bottom: 4 3/4" Weight: 28# Flap Opening: Short End