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

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.

• Security tint keeps information hidden from view for added privacy
• Transparent windows allow convenient use with printed labels
• Gummed flap creates secure seal to prevent peeling during delivery
• Perfect for sending checks, invoices, statements and more