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    Centrifugal Upblast Exhaust Fan, Product # CUBE-300-LMD140GQD

    Centrifugal Upblast Exhaust Fan, Product # CUBE-300-LMD140GQD

    • 40 x 40 inch base with prepunched mounting holes for easy attachment to roof curb
    • Multiple motor and drive options available to meet any performance and application need
    • 32.5 x 32.5 inch recommended roof opening
    • Shipping Type:
      Freight
    $2,372.96
    In stock 
    15 on Hand
    Free shipping
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    • 40 x 40 inch base with prepunched mounting holes for easy attachment to roof curb
    • Multiple motor and drive options available to meet any performance and application need
    • 32.5 x 32.5 inch recommended roof opening
    • Shipping Type:
      Freight

    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
    • Roof or wall mountable
    • Permanent embossed aluminum nameplate for exact model and serial number identification
    California Residents - Prop 65 Warning
    Specifications
    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
    32 1/2 x 32 1/2 in
    Base Height
    1 3/4 in
    Damper Width x Damper Height
    30 x 30 in
    Bearing Size
    1 in
    Height
    36 in
    Weight
    267 lbs
    Overall Diameter
    50 in
    Application
    Exhaust General and Clean Air
    Exhaust Grease-Laden Air
    High Wind
    Housing Material
    Spun Aluminum
    Drive Type
    Belt Drive
    Impeller Type
    Centrifugal Wheel
    Impeller Material
    Aluminum
    Includes
    Disconnect switch
    Certifications
    AMCA Sound & Air
    High Wind and Hurricane
    Seismic
    UL/cUL 762
    Drive Package Description
    No drive package included
    Required Accessory
    Roof curb for new roof installations
    Motor Included
    No
    Shipping Type
    Freight
    Warranty Length
    1 Year
    Performance
    CFM Range
    2630-14809
    FRPM Range
    350-910
    Ps (in. wg) 0 0.125 0.25 0.375 0.5 0.625 0.75 0.875 1 1.25 1.5 1.75 2
    1/3 0.42 390 350 CFM 6347 5773 5044 3915 - - - - - - - - -
    Sones 8.2 7.3 6.7 5.7 - - - - - - - - -
    Bhp 0.36 0.4 0.42 0.4 - - - - - - - - -
    1/2 0.6 440 360 CFM 7160 6672 6060 5301 4191 - - - - - - - -
    Sones 9.8 9 8.4 7.7 6.9 - - - - - - - -
    Bhp 0.51 0.56 0.59 0.6 0.57 - - - - - - - -
    3/4 0.88 500 400 CFM 8137 7720 7219 6641 5928 4943 - - - - - - -
    Sones 12 11.5 10.8 10.3 9.6 8.8 - - - - - - -
    Bhp 0.75 0.81 0.85 0.87 0.88 0.84 - - - - - - -
    1 1.17 550 440 CFM 8950 8571 8136 7642 7098 6411 5488 - - - - - -
    Sones 14.4 13.9 13.5 13.1 12.6 11.7 10.9 - - - - - -
    Bhp 1 1.06 1.11 1.15 1.17 1.17 1.12 - - - - - -
    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 1.76 630 510 CFM 10252 9921 9573 9167 8724 8256 7680 7045 6175 - - - -
    Sones 18.6 17.9 17.1 16.6 16.2 15.7 15.1 14.2 13.6 - - - -
    Bhp 1.51 1.58 1.64 1.69 1.73 1.75 1.76 1.74 1.67 - - - -
    2 1.23 560 490 CFM 9113 8741 8318 7839 7313 6652 5803 - - - - - -
    Sones 14.9 14.4 13.9 13.6 13.1 12.2 11.4 - - - - - -
    Bhp 1.06 1.12 1.17 1.21 1.23 1.23 1.2 - - - - - -
    2 2.41 700 560 CFM 11391 11093 10795 10443 10078 9667 9246 8753 8213 6764 - - -
    Sones 22 22 20 19.8 19.2 18.7 18.2 17.8 17.2 15.9 - - -
    Bhp 2.07 2.14 2.22 2.28 2.33 2.37 2.4 2.41 2.41 2.29 - - -
    3 1.84 640 530 CFM 10415 10089 9751 9351 8921 8461 7915 7325 6492 - - - -
    Sones 19.3 18.5 17.6 17.1 16.6 16.2 15.6 14.8 13.9 - - - -
    Bhp 1.58 1.65 1.71 1.77 1.81 1.83 1.84 1.84 1.77 - - - -
    3 3.59 800 640 CFM 13019 12758 12497 12228 11909 11589 11243 10875 10507 9599 8458 - -
    Sones 27 26 25 24 24 23 23 23 22 21 19.1 - -
    Bhp 3.09 3.17 3.26 3.34 3.41 3.47 3.52 3.55 3.59 3.59 3.51 - -
    5 2.74 730 630 CFM 11880 11594 11308 10982 10632 10258 9854 9445 8928 7711 - - -
    Sones 23 23 22 21 20 19.9 19.5 19.1 18.7 16.9 - - -
    Bhp 2.35 2.43 2.5 2.57 2.63 2.67 2.71 2.74 2.73 2.66 - - -
    5 5.3 910 730 CFM 14809 14580 14350 14121 13876 13595 13315 13034 12713 12065 11308 10478 9336
    Sones 33 33 33 31 30 30 29 29 29 28 27 25 23
    Bhp 4.55 4.64 4.74 4.84 4.93 5 5.07 5.15 5.19 5.27 5.3 5.29 5.11
    1/3 1/2 3/4 1 1 1/2 1 1/2 2 2 3 3 5 5
    0.42 0.6 0.88 1.17 0.93 1.76 1.23 2.41 1.84 3.59 2.74 5.3
    390 440 500 550 510 630 560 700 640 800 730 910
    350 360 400 440 430 510 490 560 530 640 630 730
    Ps (in. wg) CFM Sones Bhp CFM Sones Bhp CFM Sones Bhp CFM Sones Bhp CFM Sones Bhp CFM Sones Bhp CFM Sones Bhp CFM Sones Bhp CFM Sones Bhp CFM Sones Bhp CFM Sones Bhp CFM Sones Bhp
    0 6347 8.2 0.36 7160 9.8 0.51 8137 12 0.75 8950 14.4 1 8299 12.4 0.8 10252 18.6 1.51 9113 14.9 1.06 11391 22 2.07 10415 19.3 1.58 13019 27 3.09 11880 23 2.35 14809 33 4.55
    0.125 5773 7.3 0.4 6672 9 0.56 7720 11.5 0.81 8571 13.9 1.06 7890 12 0.85 9921 17.9 1.58 8741 14.4 1.12 11093 22 2.14 10089 18.5 1.65 12758 26 3.17 11594 23 2.43 14580 33 4.64
    0.25 5044 6.7 0.42 6060 8.4 0.59 7219 10.8 0.85 8136 13.5 1.11 7404 11.4 0.9 9573 17.1 1.64 8318 13.9 1.17 10795 20 2.22 9751 17.6 1.71 12497 25 3.26 11308 22 2.5 14350 33 4.74
    0.375 3915 5.7 0.4 5301 7.7 0.6 6641 10.3 0.87 7642 13.1 1.15 6843 10.9 0.92 9167 16.6 1.69 7839 13.6 1.21 10443 19.8 2.28 9351 17.1 1.77 12228 24 3.34 10982 21 2.57 14121 31 4.84
    0.5 - - - 4191 6.9 0.57 5928 9.6 0.88 7098 12.6 1.17 6167 10.1 0.93 8724 16.2 1.73 7313 13.1 1.23 10078 19.2 2.33 8921 16.6 1.81 11909 24 3.41 10632 20 2.63 13876 30 4.93
    0.625 - - - - - - 4943 8.8 0.84 6411 11.7 1.17 5259 9.3 0.9 8256 15.7 1.75 6652 12.2 1.23 9667 18.7 2.37 8461 16.2 1.83 11589 23 3.47 10258 19.9 2.67 13595 30 5
    0.75 - - - - - - - - - 5488 10.9 1.12 - - - 7680 15.1 1.76 5803 11.4 1.2 9246 18.2 2.4 7915 15.6 1.84 11243 23 3.52 9854 19.5 2.71 13315 29 5.07
    0.875 - - - - - - - - - - - - - - - 7045 14.2 1.74 - - - 8753 17.8 2.41 7325 14.8 1.84 10875 23 3.55 9445 19.1 2.74 13034 29 5.15
    1 - - - - - - - - - - - - - - - 6175 13.6 1.67 - - - 8213 17.2 2.41 6492 13.9 1.77 10507 22 3.59 8928 18.7 2.73 12713 29 5.19
    1.25 - - - - - - - - - - - - - - - - - - - - - 6764 15.9 2.29 - - - 9599 21 3.59 7711 16.9 2.66 12065 28 5.27
    1.5 - - - - - - - - - - - - - - - - - - - - - - - - - - - 8458 19.1 3.51 - - - 11308 27 5.3
    1.75 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 10478 25 5.29
    2 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 9336 23 5.11
    • 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.
    Videos

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    Centering a wheel on a spun aluminum rooftop exhaust fan

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