One of the longest-established names in American rolling closure manufacture, formed from Cornell Iron Works and The Cookson Company and building from plants in Mountain Top, Pennsylvania and Goodyear, Arizona. Its coiling fire doors, counter shutters and fire-rated grilles carry UL listings from 45 minutes to 4 hours, are FM Approved and are listed with the California State Fire Marshal. Specification data and drop-test guidance support the NFPA 80 duties that fall on the building owner.