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    Centrifugal Downblast Exhaust Fan, Product # GB-240-7134X3QD-DR2, 3708-6243 CFM

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    Centrifugal Downblast Exhaust Fan, Product # GB-240-7134X3QD-DR2, 3708-6243 CFM

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    Electrical
    208-230/460V / 3Ph,
    60Hz

    CFM Range
    3708-6243
    CFM

    Motor
    3/4 HP
    Belt Drive

    • 34 x 34 inch base with prepunched mounting holes for easy attachment to roof curb
    • Variable pitch adjustable motor pulley to optimize fan performance
    • 30.5 x 30.5 inch recommended roof opening

    • Shipping Type:
      Freight
    View other GB-240 products
    $2,443.94
    In stock 
    1 on Hand
    Free shipping
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    Submit a request online and get a quote from your local representative within 4 hours.
    Request A quote

    Electrical
    208-230/460V / 3Ph,
    60Hz

    CFM Range
    3708-6243
    CFM

    Motor
    3/4 HP
    Belt Drive

    • 34 x 34 inch base with prepunched mounting holes for easy attachment to roof curb
    • Variable pitch adjustable motor pulley to optimize fan performance
    • 30.5 x 30.5 inch recommended roof opening

    • Shipping Type:
      Freight
    View other GB-240 products

    Model GB, belt drive centrifugal roof exhaust fans are designed to meet the general clean air exhaust requirements for industrial and commercial buildings. Units feature a fully rolled windband bead for increased stability and easy transport. Fresh outside air is drawn in under the motor cover to maximize motor life. 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
    • Fully rolled windband bead for increased stability and easy transport
    • Positive motor cooling with fresh air results in maximum motor life
    • Permanent embossed aluminum nameplate for exact model and serial number identification
    • Motor, belt and pulleys shipped loose for field assembly

    Similar to:

    1. ACME PV-180
    2. ACME PV-200
    3. ACME PV-220
    4. ACME PV-220
    5. ACME PV-240
    6. ACME PV-260
    7. Carnes VEBK-21
    8. Loren Cook ACEB-195
    9. Loren Cook ACEB-210
    10. Loren Cook ACEB-225
    11. Loren Cook ACEB-245
    12. Soler & Palau SDB-22
    13. Soler & Palau SDB-22
    14. Twin City Fan BCRD-240D
    15. Twin City Fan BCRD-240DHP

    California Residents-

    Prop 65 Warning
    Specifications
    Base/Panel Length X Width
    34 x 34 in
    Curb Cap Size
    34 in
    Impeller Diameter
    24 3/4 in
    Roof Opening Width x Roof Opening Length
    30 1/2 x 30 1/2 in
    Base Height
    1 3/4 in
    Base Top to Shroud Top
    31 1/2 in
    Damper Width x Damper Height
    24 x 24 in
    Bearing Size
    1 in
    Height
    31 1/2 in
    Weight
    119 lbs
    Overall Diameter
    42 3/4 in
    Application
    Exhaust General and Clean Air
    Housing Material
    Spun Aluminum
    Drive Type
    Belt Drive
    Impeller Type
    Centrifugal Wheel
    Impeller Material
    Aluminum
    Includes
    Unassembled drive package
    Certifications
    AMCA Sound & Air
    High Wind and Hurricane
    Seismic
    UL/cUL 705
    Drive Package Description
    Motor and drives shipped loose
    Required Accessory
    Roof curb for new installations
    Motor Insulation
    F
    Motor Phase
    3
    Service Factor
    1.25
    Voltage
    208-230/460
    HP
    3/4
    Hertz
    60
    Motor Enclosure
    Open Drip Proof
    RPM
    1800
    Nominal Efficiency
    81.1
    NEMA Frame Size
    56
    Shipping Type
    Freight
    Warranty Length
    1 Year
    Performance
    CFM Range
    3708-6243
    FRPM Range
    550-680
    What do these terms (BHP, CFM, Sones, etc.) mean?
    		Ps (in. wg) 0 0.125 0.25 0.375 0.5 0.625 0.75
    3/4 0.86 680 550 CFM 6243 5949 5653 5315 4903 4374 3708
    Sones 14 13.3 12.7 12.3 12 11.5 11.4
    Bhp 0.78 0.82 0.85 0.86 0.86 0.84 0.8
    		3/4
    		0.86
    		680
    		550
    Ps (in. wg) CFM Sones Bhp
    0 6243 14 0.78
    0.125 5949 13.3 0.82
    0.25 5653 12.7 0.85
    0.375 5315 12.3 0.86
    0.5 4903 12 0.86
    0.625 4374 11.5 0.84
    0.75 3708 11.4 0.8
    • ¹û¶³ÊÓƵ 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 include the effects of birdscreen.
    • 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.
    Documents

    General

    Instruction Manuals

    Videos

    Common methods for tensioning a rooftop exhaust fan belt

    Centering a wheel on a spun aluminum rooftop exhaust fan

    Questions & Answers
    Note: We will only use your email to notify you when there is a reply to your question.
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