Broan L500 High Capacity Ventilation Fan Ideal solution for conference rooms, public restrooms and other areas that require ongoing ventilation. Features - -Acoustic insulation lines the housing to reduce sound levels. -Quiet, low RPM motor is permanently lubricated for continuous operation. -Automatic backdraft damper built into the duct connection. -Resilient motor mounts minimize vibration. -Two impact resistant centrifugal blower wheels. -8-way adjustable mounting brackets permit installation flexibility. -4-1/2" x 18-1/2" duct connection. -Galvanize steel housing. -Low profile, impact-resistant, high strength WHITE METAL GRILL. -Duct horizontally or vertically. -Variable speed control available separately (model 80L). -514 CFM -3.3 Sones -2.2 Amps -232 Watts -120 Volts -Housing dimensions: 21-1/2"L x 12-1/4"W x 11-3/4"H -Grill dimensions: 23-1/4"L x 14"W PLEASE NOTE OUR SHIPPING AND RETURN POLICIES ON OUR HOME PAGE.