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    Centrifugal Upblast Exhaust Fan, Product # CUBE-300-15140GQD-DR1, 5259-8299 CFM

    Centrifugal Upblast Exhaust Fan, Product # CUBE-300-15140GQD-DR1, 5259-8299 CFM

    • 40 x 40 inch base with prepunched mounting holes for easy attachment to roof curb
    • 36.5 x 36.5 inch recommended roof opening
    • Roof or wall mountable
    • Shipping Type:
    25 Days
    Lead Time 
    Free shipping
    Need a specific configuration?
    Submit a request online and get a quote from your local representative within 4 hours.

    • 40 x 40 inch base with prepunched mounting holes for easy attachment to roof curb
    • 36.5 x 36.5 inch recommended roof opening
    • Roof or wall mountable
    • Shipping Type:

    Model CUBE is an aluminum exhaust fan specifically designed for roof or sidewall mounted applications where contaminated or grease laden exhaust air can be discharged directly upward, away from the roof or wall surface. The fans feature a one piece windband continuously welded to curb cap and double studded isolators for true vibration isolation. 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
    • One-piece aluminum windband with rolled bead provides extra rigidity
    • Cooling fins located on top of fan wheel draw outside air through a large breather tube directly into the motor compartment extending motor life
    • Windband is continually welded to the curb cap and drain trough for leakproof construction
    • Machine cast pulleys are adjustable for final system balancing
    • Permanent embossed aluminum nameplate for exact model and serial number identification
    • Motor, belt and pulleys shipped loose for field assembly

    California Residents-

    Prop 65 Warning
    California Title 20
    Base/Panel Length X Width
    40 x 40 in
    Curb Cap Size
    40 in
    Impeller Diameter
    30 3/4 in
    Roof Opening Width x Roof Opening Length
    36 1/2 x 36 1/2 in
    Base Height
    1 3/4 in
    Damper Width x Damper Height
    34 x 34 in
    Bearing Size
    1 in
    36 in
    197 lbs
    Overall Diameter
    50 in
    Exhaust General and Clean Air
    Exhaust Grease-Laden Air
    Housing Material
    Spun Aluminum
    Drive Type
    Belt Drive
    Impeller Type
    Centrifugal Wheel
    Impeller Material
    Unassembled drive package
    AMCA Sound & Air
    UL/cUL 705 Listed - Supplement SC - "Power Ventilators for Restaurant Exh. Appliances" (Formerly UL 762)
    Drive Package Description
    Motor and drives shipped loose
    Required Accessory
    Roof curb for new roof installations
    Motor Insulation
    Motor Phase
    1 1/2
    Motor Enclosure
    Open Drip Proof
    Thermal Protection
    Shipping Type
    Warranty Length
    1 Year
    CFM Range
    FRPM Range

    California Title 20 | Fan Energy Index Boundaries
    Fan Energy Index >= 1.00 Efficiency Boundaries

    Max Airflow (CFM) 8916
    Max Fan Speed (RPM) 773
    Max Pressure (in. w.g.) 1.580
    Type of Pressure Static

    Note: Operation outside of these boundaries will result in an energy inefficient operation

    Ps (in. wg) 0 0.125 0.25 0.375 0.5 0.625
    1 1/2 0.93 510 430 CFM 8299 7890 7404 6843 6167 5259
    Sones 12.4 12 11.4 10.9 10.1 9.3
    Bhp 0.8 0.85 0.9 0.92 0.93 0.9
    1 1/2
    Ps (in. wg) CFM Sones Bhp
    0 8299 12.4 0.8
    0.125 7890 12 0.85
    0.25 7404 11.4 0.9
    0.375 6843 10.9 0.92
    0.5 6167 10.1 0.93
    0.625 5259 9.3 0.9
    • Greenheck Fan Corporation certifies that the model shown herein is licensed to bear the AMCA Seal.
    • The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and AMCA Publication 311 and comply with the requirements of the AMCA Certified Ratings Program.
    • Performance certified is for installation type A: Free inlet, Free outlet.
    • Power rating (BHP/kW) includes transmission losses.
    • Performance ratings do not include the effects of appurtenances (accessories).
    • The sound ratings shown are loudness values in fan sones at 5 ft. (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values shown are for installation type A: free inlet hemispherical sone levels.

    Common methods for tensioning a rooftop exhaust fan belt

    Centering a wheel on a spun aluminum rooftop exhaust fan

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