The LHDF Low Profile Filtered Hooded Propeller Roof Ventilator provides cost effective, general purpose ventilation of commercial buildings, with a pleasing low profile design that minimizes extension above the roof line. A wide array of adjustable pitch, cast aluminum propellers are available to meet specific performances and application requirements. Twin City Fan & Blower also offers a complete line of options and accessories such as roof curbs, backdraft dampers, disconnect switches and special coatings.
Sizes (wheel diameters)
21 to 48 inches (535 mm to 1,220 mm)
Airflow to 30,400 CFM (51,600 m3/hour)
Static pressure to 1 inch w.g. (250 Pa)