White window envelope with a 4 1/2w x 1h sized window on the right side. Designed for Medicare Form #HCFA-1500, Medicaid, and other health insurance claim forms. Security lining. Window envelope. Product DescriptionDesigned for Medicare Form #HCFA-1500, Medicaid and other health insurance claim forms. Features a security-lining to assure privacy of contents. Window envelope helps [...]