|The 278 Series Powerglide Overhead Concealed is ideally suited for:
·Heavyduty exterior and interior applications
·Schools maintaining `cast iron` specs
·Hospitals maintaining `cast iron` specs.
Features and Benefits:
·BHMA certified ANSI A156.4 Grade 1
·Conforms to UL 10C and UBC 7-2 (1997)
·UL and CUL Listed
·Separate closing and latching speeds
·Backcheck with two pressure relief valves standard
·Adjustable spring power: Sized 1 thru 6
·Cast iron, one piece body
·Forged steel arms.