Staples Premium #10 Window Envelopes with Gummed Flaps - 4-1/8" x 9-1/2" - White - 500 Pack

Send mail that displays a professional look with Staples Premium #10 Window Envelopes. #10 is a commonly used envelope size for mailing letters, cheques, billing statements, invoices and more. These traditional envelopes feature a commercial flap with a diagonal, gummed closure that is moisture-activated for a secure seal. The white envelopes are made of sturdy 24 lb stock and come with convenient left-sided address windows.