Business Source Regular Security Invoice Envelopes - Business - #10 - 4 1/8" Width x 9 1/2" Length - 24 lb - Self-sealing - 500 / Box - White

No. 10 invoice envelopes offer an inside security tint to privacy for your contents. Self-sealing design makes envelopes quick and easy to close. 24 lb. envelopes require no moisture to seal. Unique double-flap design keeps the gum from sticking before use. Simply raise the lower flap and press.