Global Industrial™ 30"" Roof Ventilator 10235 CFM 3/4 HP 115/230V p/n 653221

GLOBAL INDUSTRIAL'S™ SERIES INDUSTRIAL ROOF EXHAUSTERS ARE DESIGNED FOR GENERAL VENTILATION IN PRODUCTION OR WAREHOUSE AREAS WHERE EFFICIENT QUIET AIR FLOW IS REQUIRED. KEY FEATURES AND BENEFITS RUGGEDLY CONSTRUCTED STEEL CURB CAP INCLUDING SPUN VENTURI SECTION FOR EFFICIENT AIR FLOW. HEAVY GAUGE FABRICATED STEEL PROPELLERS ARE STANDARD. CAST ALUMINUM SPARK-RESISTANT PROPELLERS AVAILABLE FOR HAZARDOUS LOCATIONS. BUTTERFLY DAMPER SECTION MILL GALVANIZED CONSTRUCTION WITH DAMPER BLADES THAT OPEN WHEN FAN IS ENERGIZED AND CLOSE WEATHERTIGHT WHEN UNIT IS OFF. DAMPERS ROTATE IN NYLON BEARINGS ON A STAINLESS STEEL AXLE. BELT DRIVEN FOR QUIET OPERATION. INDUSTRIAL GRADE CAST IRON PILLOW BLOCK BALL BEARINGS WITH LOCKING COLLARS. OPTIONAL ACCESSORIES WEATHERPROOF NON-FUSED DISCONNECT SWITCHES. INSULATED ROOF CURBS FOR FLAT OR PITCHED ROOFS.