Business Source No. 9 Double Window Invoice Envelopes - Double Window - #9 - 8 7/8" Width x 3 7/8" Length - 24 lb - White - 500 / Box

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.