Columbian Double-window Security Envelopes - Double Window - 4" Width x 9" Length - 24 lb - Gummed - Wove - 500 / Box - White

Double-window envelopes are security tinted to keep your private information hidden from view. Gummed flap creates a solid seal with moisture to prevent it from peeling away during delivery. Two front windows completely showcase printed addresses to prevent any reading errors from handwritten items. Envelopes are perfect for mailing checks, invoices and statements.