Style 27 Double window envelopes. For general business forms and multi-purpose applications. The top window (15/16 x 3-1/16 Inches) is positioned 15/16 Inches from left and 2-1/2 Inches from the bottom of the envelope. The bottom window (1-1/8 x 4 Inches) is 1 Inches from the left and 13/16 Inches from the bottom. Poly windows and inside tint for privacy of contents.