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FRB – Motorized Plenum Box


The FRB is a plenum box with motorized opening working in vertical flow. A coupling sleeve is integrated into the suction to be connected to the ductwork if necessary Fan diameters are available from 400 to 1250mm with drives up to 225 frame size.

General dimensions


EN12101-3 certified for operation:

    • 400°C/2h
    • 300°C/2h
    • 200°C/2h


The casing is made of pre-galvanised Z275 steel. The FRB is suitable for snowy, windy or sandy environments.

Mechanical characteristics:

    • Certified for 10,000 opening and closing cycles
    • Wind resistance WL1500 and weight resistance SL500