No. 9 envelopes feature security tint and double windows and are compatible with most standard letter-size, computer-generated invoices and statements. The 1-3/16 x 3-1/2" top window is positioned 3/8" from left and 2" from the bottom of the envelope. The bottom window (1" x 4") is 3/8" from the bottom. 24 lb."
Double Window Envelope
