• 20 inch Roof Vent | Aura Gravity Roof Vent with Curb Mount Flange - AV-20-C12-CMF
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Model AF-20-C12-CMF | Aura Fan | 20" Diameter | 12" Tall Collar | Curb Mount Flange | CFM: 3300

Model AF-20-C12-CMF | Aura Fan | 20" Diameter | 12" Tall Collar | Curb Mount Flange | CFM: 3300

AF-20-C12-CMF

843951001517

Aura Roof Exhaust Fan with Curb Mount Flange  

Price: $760.00 USD

$760.00 USD
Sale Sold out
Shut-off Switch Options:
SOS - Simple Shut-Off Switch
TSOS - Temperature Sensor Shut-off Switch
THSOS - Thermostat/Humidistat Shut-off Switch

  • Aluminum Unpainted

    Aluminum Unpainted

  • Plain White STANDARD+$40

  • Plain Black STANDARD+$40

  • Pine Green STANDARD RAL 6028+$40

  • Quartz Grey [Weatherwood] STANDARD RAL 7039+$40

  • Terra Brown STANDARD RAL 8028+$40

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Color

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20 inch Roof Vent | Aura Gravity Roof Vent with Curb Mount Flange - AV-20-C12-CMF

Pending

20-Inch Aura Attic Fan with Curb Mount Flange | AF-20-C12-CMF | 3,300 CFM

The 20-inch Aura Attic Fan with Curb Mount Flange is 20 inches in diameter and has a 12-inch tall collar. The model number is AF-20-C12-CMF, which exhausts air at 3,300 CFM. All 20-inch attic fans have a standard 24-x-24-inch curb mount flange.

Benefits:

  • Energy-efficient attic fan ventilates at 3,300cfm
  • Keeps your building comfortable and energy-efficient
  • Works passively with the wind when the motor is off
  • Inner louvers prevent insects and animals from entering the vent
  • Round aerodynamic design can withstand harsh weather

Installation: For low slope or flat roof ventilation

The Aura Attic Fan exhausts air continuously even when the motor is off. This attic fan works passively because of the Venturi Effect. The wind blows against the outer louvers, creating an upward draft, allowing air to flow freely from the attic. 

The curb mount flange allows for easy installation on roof curbs. In addition, the curbed flange can be used as a hatch to access the ductwork below. We recommend installation on roofs with a pitch of 2/12 or less.

20-inch Aura Attic Fans are compatible with AVP's 6-inch tall, 8-inch tall, 12-inch tall, and 18-inch tall roof curbs.

20-inch Aura Attic Fans are compatible with AVP's insulated 6-inch tall, 8-inch tall, 12-inch tall, and 18-inch tall roof curbs. 

Motor Type:  PSC – Open Ventilation

With 3/4 horsepower and 3,300 CFM, this 20-inch vent is perfect for ventilating large attic spaces or plenums.

This Attic Fan also has an optional Shut-Off Switch, Thermostat, and Humidistat (THSOS).

How it works:

The attic fan will still ventilate passively even when the motor is off. In other words, even the slightest breeze can create exhaust ventilation to draw air out of the fan.

For any questions, please see the frequently asked questions page. If you still have questions, email the sales team at sales@roofvents.com or call 845-565-7770

Pending

Colors

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Calculate number of Model  AF-20-C12-CMF  Vents Needed for a Given Area

Enter the Width and Length of the attic space you need to ventilate to calculate the area. You may also enter the area directly in the "Area" field. It is not necessary to hit the Return or Enter key (which will refresh this page), just enter numbers in the fields.

Enter width of space to calculate area (or enter Area below)
Enter width of space to calculate area (or enter Area below)

If you know it, you may enter the area directly here

The diameter size of all roof vents determines the Net Free Area, also known as the "NFA". NFA is the measured amount of opening each vent offers at each specific size. to be available for venting air through a specific vent size. The calculator below will find the overall number of vents needed to effectively ventilate the targeted attic space.

Once you have the area, the numbers shown below are the number of vents of that size which would ventilate the specified area with both 1/300 and 1/150 rule.

Results Appear Here





*Please note
The roof vent calculation values shown above are for the exhaust portion of the roof. The same amount of net free air inches is needed for air intake as well. Proper roof ventilation consists of 50% air exhaust and 50% air intake.