Single Window – 9″ Width x 12 1/2″ Length – 28 lb – Self-sealing – White – Wove – 100 / Box

9″ x 12-1/2″ Health Claim Insurance Envelopes simplify mailing preparation. Durable, claim form envelopes are made of 28 lb. white wove stock to withstand extensive handling in transit. First-class border lets your recipient know that something important is in their mailbox. Contents are protected during use to give you assurance that they arrive unharmed. 9″ x 12-1/2″ size accommodates forms without folding. Single window displays an address. Moisture-activated flap features deep gumming for a secure seal. Envelopes are perfect for Medicare Form HCFA-1508 and other healthcare forms.