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Greenheck will be closed November 26th and 27th in observance of the Thanksgiving holiday. Order shipments will resume on Monday, November 30th.
Greenheck will be closed November 26th and 27th in observance of the Thanksgiving holiday. Order shipments will resume on Monday, November 30th.
G
The model G is a direct drive, spun aluminum fan, designed for roof mounting on a curb for general, clean air exhaust applications. Units feature a spun aluminum housing and have certifications including seismic, high wind and hurricane.
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Calculate Air Exchange (CFM)
Use the calculator to determine the Air Exchange (CFM) required to adequately ventilate an area.Enter information into the fields below in order to calculate the CFM (per fan).
To calculate the CFM required to adequately ventilate an area, we divide the room volume by the appropriate "Minutes per Change" value.
[CFM] = [Room Volume] / [Min./Chg.]
Airflow (CFM) per Fan
*
Starred items represent required fields.
Calculate Static Pressure (SP)
Use the calculator to determine the amount of static pressure the fan must overcome.The pressure generated by fans in ductwork is typically very small. An accurate measurement of static presure is critical to proper fan selection however. Static pressure in fan systems is typically less than 2" SP, or 0.072 Psi.
The amount of static pressure that the fan must overcome depends on the air velocity in the ductwork, the number of duct turns (and other resistive elements), and the duct length. For properly designed systems with sufficient make-up air, the guidelines in the table below can be used for estimating static pressure.
Static pressure
* Starred items represent required fields.
Static Pressure Guidelines
Non-Ducted 0.05" to 0.20"
Ducted 0.20" to 0.40" per 100 feet of duct (assuming duct air velocity falls within 1,000 to 1,800 feet per minute)
Fittings 0.08" per fitting (elbow, register, grill, damper, louver, duct turn, etc.)
Kitchen Hood Exhaust 0.625" to 1.50"
Important: Static pressure requirements are significantly affected by the amount of make-up air supplied to an area. Insufficient make-up air will increase static pressure and reduce the amount of air that will be exhausted. Remember, for each cubic foot of air exhausted, one cubic foot of air must be supplied.
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Showing 15 of 19 results
| SKU | DRIVE TYPE | HP | VOLTAGE | PHASE | CFM RANGE | FRPM RANGE | BASE/PANEL LENGTH x WIDTH | PRICE | ||
|---|---|---|---|---|---|---|---|---|---|---|
Model / Size: G-060 | Direct Drive | 1/60 | 115 | 1 | 73-203 | 1050-1550 | 17 x 17 in | $385.52 | ||
Model / Size: G-070 | Direct Drive | 1/30 | 115 | 1 | 179-374 | 1050-1550 | 17 x 17 in | $385.52 | ||
Model / Size: G-080 | Direct Drive | 1/20 | 115 | 1 | 134-495 | 1050-1550 | 17 x 17 in | $428.27 | ||
Model / Size: G-090 | Direct Drive | 1/15 | 115 | 1 | 293-768 | 1050-1550 | 17 x 17 in | $428.27 | ||
Model / Size: G-090 | Direct Drive | 1/6 | 115 208 230 277 | 1 | 293-855 | 1050-1725 | 17 x 17 in | $709.75 | ||
Model / Size: G-095 | Direct Drive | 1/8 | 115 | 1 | 184-1059 | 1050-1550 | 17 x 17 in | $428.27 | ||
Model / Size: G-095 | Direct Drive | 1/6 | 115 208 230 277 | 1 | 184-1179 | 1050-1725 | 17 x 17 in | $715.45 | ||
Model / Size: G-099 | Direct Drive | 1/4 | 115 208 230 277 | 1 | 400-1307 | 720-1725 | 19 x 19 in | $982.68 | ||
Model / Size: G-103 | Direct Drive | 1/4 | 115 | 1 | 955-1462 | 1380-1725 | 19 x 19 in | $722.58 | ||
Model / Size: G-103 | Direct Drive | 1/6 | 115 | 1 | 507-966 | 910-1140 | 19 x 19 in | $689.80 | ||
Model / Size: G-103 | Direct Drive | 1/4 | 115 208 230 277 | 1 | 477-1462 | 720-1725 | 19 x 19 in | $1,026.86 | ||
Model / Size: G-123 | Direct Drive | 1/2 | 115 230 | 1 | 1180-2093 | 1380-1725 | 19 x 19 in | $779.58 | ||
Model / Size: G-123 | Direct Drive | 1/6 | 115 | 1 | 831-1383 | 910-1140 | 19 x 19 in | $691.22 | ||
Model / Size: G-123 | Direct Drive | 1/2 | 115 | 1 | 515-2093 | 580-1725 | 19 x 19 in | $1,117.36 | ||
Model / Size: G-133 | Direct Drive | 1/2 | 115 230 | 1 | 1474-2448 | 1380-1725 | 19 x 19 in | $876.50 |
Centrifugal Downblast Exhaust Fan, Model G-060, Direct Drive, 3-Speed, 115V, 1Ph, 73-203 CFM
$385.52
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.
- 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
- Positive motor cooling with fresh air results in maximum motor life
- Galvanized birdscreen protects the fan discharge from birds and small objects
Centrifugal Downblast Exhaust Fan, Model G-070, Direct Drive, 3-Speed, 115V, 1Ph, 179-374 CFM
$385.52
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.
- 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
- Positive motor cooling with fresh air results in maximum motor life
- Galvanized birdscreen protects the fan discharge from birds and small objects
Centrifugal Downblast Exhaust Fan, Model G-080, Direct Drive, 3-Speed, 115V, 1Ph, 134-495 CFM
$428.27
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.
- 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
- Positive motor cooling with fresh air results in maximum motor life
- Galvanized birdscreen protects the fan discharge from birds and small objects
Centrifugal Downblast Exhaust Fan, Model G-090, Direct Drive, 3-Speed, 115V, 1Ph, 293-768 CFM
$428.27
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.
- 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
- Positive motor cooling with fresh air results in maximum motor life
- Galvanized birdscreen protects the fan discharge from birds and small objects
Centrifugal Downblast Exhaust Fan, Variable Speed, Model G-090, Direct Drive, Vari-Green EC motor, 1/6HP, 115/208-230V, 1Ph, 293-855 CFM
$709.75
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.
- 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
- Positive motor cooling with fresh air results in maximum motor life
- Galvanized birdscreen protects the fan discharge from birds and small objects
- Energy-efficient, speed controllable, Vari-green® motor
Centrifugal Downblast Exhaust Fan, Model G-095, Direct Drive, 3-Speed, 115V, 1Ph, 184-1059 CFM
$428.27
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.
- 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
- Positive motor cooling with fresh air results in maximum motor life
- Galvanized birdscreen protects the fan discharge from birds and small objects
Centrifugal Downblast Exhaust Fan, Variable Speed, Model G-095, Direct Drive, Vari-Green EC motor, 1/6HP, 115/208-230V, 1Ph, 184-1179 CFM
$715.45
Model G, direct drive centrifugal roof exhaust fans provide the industry's best performace 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.
- 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
- Positive motor cooling with fresh air results in maximum motor life
- Galvanized birdscreen protects the fan discharge from birds and small objects
- Energy-efficient, speed controllable, Vari-green® motor
Centrifugal Downblast Exhaust Fan, Variable Speed, Model G-099, Direct Drive, Vari-Green EC motor, 1/6HP, 115/208-230V, 1Ph, 400-1307 CFM
$982.68
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.
- 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
- Positive motor cooling with fresh air results in maximum motor life
- Galvanized birdscreen protects the fan discharge from birds and small objects
- Energy-efficient, speed controllable, Vari-green® motor
Centrifugal Downblast Exhaust Fan, Model G-103, Direct Drive, 1/4HP, 115V, 1Ph, 955-1462 CFM
$722.58
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.
- 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
- Positive motor cooling with fresh air results in maximum motor life
- Galvanized birdscreen protects the fan discharge from birds and small objects
Centrifugal Downblast Exhaust Fan, Model G-103, Direct Drive, 1/6HP, 115V, 1Ph, 507-966 CFM
$689.80
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.
- 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
- Positive motor cooling with fresh air results in maximum motor life
- Galvanized birdscreen protects the fan discharge from birds and small objects
Centrifugal Downblast Exhaust Fan, Variable Speed, Model G-103, Direct Drive, Vari-Green EC motor, 1/4HP, 115/208-230V, 1Ph, 477-1462 CFM
$1,026.86
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.
- 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
- Positive motor cooling with fresh air results in maximum motor life
- Galvanized birdscreen protects the fan discharge from birds and small objects
- Energy-efficient, speed controllable, Vari-green® motor
Centrifugal Downblast Exhaust Fan, Model G-123, Direct Drive, 1/2HP, 115V, 1Ph, 1180-2093 CFM
$779.58
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.
- 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
- Positive motor cooling with fresh air results in maximum motor life
- Galvanized birdscreen protects the fan discharge from birds and small objects
Centrifugal Downblast Exhaust Fan, Model G-123, Direct Drive, 1/6HP, 115V, 1Ph, 831-1383 CFM
$691.22
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.
- 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
- Positive motor cooling with fresh air results in maximum motor life
- Galvanized birdscreen protects the fan discharge from birds and small objects
Centrifugal Downblast Exhaust Fan, Variable Speed, Model G-123, Direct Drive, Vari-Green EC motor, 1/2HP, 115/208-230V, 1Ph, 515-2093 CFM
$1,117.36
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.
- 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
- Positive motor cooling with fresh air results in maximum motor life
- Galvanized birdscreen protects the fan discharge from birds and small objects
- Energy-efficient, speed controllable, Vari-green® motor
Centrifugal Downblast Exhaust Fan, Model G-133, Direct Drive, 1/2HP, 115V, 1Ph, 1474-2448 CFM
$876.50
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.
- 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
- Positive motor cooling with fresh air results in maximum motor life
- Galvanized birdscreen protects the fan discharge from birds and small objects
Find by Performance
Our performance filter tool can help you choose the right product based on your performance requirements.
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Applications/uses for a particular fan or ventilator.
Refers to the location where a fan or ventilator can be mounted.
Square base dimension on power roof ventilators. Square fan panel dimension on sidewall propeller fans.
Transmission type of the ventilator (belt drive or direct drive).
Indicates the space relationships of windings and changing values of the recurring cycles of AC voltages and currents. The most common power supplies are either single- or three-phase.
The force that causes a current to flow in an electrical circuit. The voltage of a motor is usually determined by the supply to which it is attached. NEMA requires that motor be able to carry its rated horsepower at nameplate voltage plus or minus 1% al
The power required to drive an air moving device. Horsepower required varies with system conditions.
The "ACTUAL" damper width and height. Dampers are undersized to allow them to be mounted into the duct work/wall opening.
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Version 1.0, April 2019
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