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

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 Security tint keeps information hidden from view for added privacy