Centrifugal Downblast Exhaust Fan, Product # G-140-B3122XQD

    Greenheck Product # G-140-B3122XQD
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    PRODUCT ALERT : New Product SKU
    Product # G-143-BX-QD has been replaced with G-140-B3122XQD. The product change is in name only. Form, fit and function remain the same.

    • 22 x 22 inch base with prepunched mounting holes for easy attachment to roof curb
    • Speed controllable, with up to 30% turndown
    • 18.5 x 18.5 inch recommended roof opening


    • AMCA Sound & Air
    • High Wind and Hurricane
    • Seismic
    • UL/cUL 705
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    Product Description

    Model G, direct drive centrifugal roof exhaust fans provide the industry's best performance and durability for general clean air applications where air is discharged downward, toward the roof. Units feature the most advanced motor cooling of any fan in its class. Ideal for new installations or for retrofit, replacement applications. Curb adapters and reducers available to eliminate the need to field fabricate transitions when there is an existing roof curb.

    • Centrifugal wheel provides high-efficiency and minimal sound
    • True vibration isolation supports the motor and wheel for long life and quiet operation
    • One-piece aluminum curb cap provides a weather-tight fit
    • Galvanized birdscreen protects the fan discharge from birds and small objects
    • Positive motor cooling with fresh air results in maximum motor life
    • Permanent embossed aluminum nameplate for exact model and serial number identification
    • Suitable for High Wind applications
    California Residents - Prop 65 Warning