Wall mount fiberglass ventilator with flange, screen guard and louvers. Fan propeller (1914 pattern) is a six blade 36"Ø with internal shroud. Powered by a 2HP, 875RPM internal-mounted, directly driven severe duty motor. Requires 200-230/460 volt, 60Hz, 3 phase AC power. Required opening for housing: approx. 44" square, housing depth including louvers: 39.5".
Demonstration video on file.