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Electrician's Wiki - QMark RVB - Belt Drive Roof Ventilators
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Attic Ventilation
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QMark RVB - Belt Drive Roof Ventilators
Low Noise Level Roof Ventilators
Professional rating

Standard props are heavy gauge steel. Belt drive heavy-duty industrial construction. Totally enclosed motor standard, ODP optional. Low noise level. Rolled inlet venturi for efficient air flow. Butterfly damper axles pivot on self-lubricating nylon bearings. Damper edge tapered for weather seal. Wind band is 18 gauge galvanized with 2" double rolled edge top and bottom for added strength.

Manufacturer Name: Marley (348)
Location: Bennettsville, SC, United States
Description: Innovative, Quality Engineered, Commercial, Industrial, & Residential Electric Comfort Heaters & Ventilation Solutions
Link to Website: http://www.marleymep.com
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