Business Source Regular Security Invoice Envelopes Business – #10 – 4 1/8″ Width x 9 1/2″ Length – 24 lb – Self-sealing – White – 500 / Box (BSN04645)

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.