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Centrifugal Rooftop Filtered Supply Fan, Belt Driven


Twin City Fan’s belt driven filtered supply fan, model BCRFS, is designed specifically for roof mounted applications, supplying clean, untempered make-up air. These fans offer high efficiency and quiet operation in a compact design.

BCRFS units feature double width forward curved centrifugal impeller , which produce high air volumes at low speeds. Units are manufactured under strict quality assurance standards to ensure catalogued performance and years of trouble-free operation.

Sizes (impeller diameters)

  • 8.86 to 22.05 inches (225 mm to 560 mm)


  • Airflow to 17,000 CFM (28,900 m3/hour)
  • Static pressure to 4 inches w.g. (990 Pa)

Installation manual