Quality Park Pre-Printed X-Ray Film Mailer, String and Button, Manilla, 15 x 18, 100 per Carton, (E8894) PRE-PRINTED: Pre-printed with "X-RAY FILM PLEASE DO NOT BEND" with address lines for convenience DURABLE: Heavyweight manila tag will protect films while in transit MEDICAL OFFICE: Save on costs in medical offices by using these reusable X-Ray Film Mailers STRING-AND-BUTTON: Convenient when reusing the envelope, easy to open and close repeatedly GREAT VALUE: Conveniently packed in 100 count to reduce the frequency of repurchasing