skip to Main Content

Aura Retrofit Gravity Vent | 12″ Diameter AV-12-RF


  • All our aluminum products can be painted with a durable baked-on powder coating surface finish.

    • 0 $
    • 14 $
    • 28 $

    Hover (or tap once) to show color with name, Click (or tap again) to select.

    Hover (or tap once) to show color with name, Click (or tap again) to select.

Brand: Active VentilationUPC(GTIN): 843951001234 SKU: AV-12-RF Category:
Retrofit Aura Vent Cap AV-12-RF-for-GI
Retrofit Aura Vent Cap AV-12-RF
Retrofit Aura Vent Cap AV-12-RF
Retrofit Aura Vent Cap AV-12-RF-BL-for-GI-0-exp
Retrofit Aura Vent Cap AV-12-RF-BR-for-HD
Retrofit Aura Vent Cap AV-12-RF-WD-for-HD-1
Retrofit Aura Vent Cap AV-12-RF-WT-for-HD
Retrofit Aura Vent Cap AV-12-RF-1
Retrofit Aura Vent Cap AV-12-RF-3
Retrofit Aura Vent Cap AV-12-RF-BL-on-base
Retrofit Aura Vent Cap AV-12-RF-WD-for-HD

Shipping Dimensions for AV-12-RF

Actual Package Weight 6 lbs
Dimensions 18 × 18 × 10 in
UPS Dimensional (Billable) Weight 24 lbs

Active Ventilation Products

Click here for -> Shipping / Delivery - Policies and Procedures

Click to enlarge pdf for print
Retrofit Aura Vent Cap AV-12-RF-cut-away-and-measurements

Basic dimensions of the Aura Vent and it’s identifying attributes. Primary identifying dimensions of vents and fans are the inside diameter of the Head, which equals the diameter of the hole being vented, and the height of the Collar which is the solid tube between the Head of the vent and the Flange which attaches to the roof.

Inside Diameter:

16 in.
30.5 cm.

Outside Diameter:

16 in.
40.6 cm.

Retrofit Stop Rib:

3.8 cm.

Height of Head:

6 in.
15.2 cm.

Diameter of Retrofit Opening:

Total Height of Retrofit Vent:

7.5 in.
19.1 cm.

Louvers are the vertical openings in the vent, which facilitates the flow of air, while keeping animals, insects, debris, and embers out.  The combination of inner and outer Louvers on our signature “Aura” series of vents and fans are shaped to create a positive vacuum effect which draws air out of the vent, utilizing a physical principle known as the Venturi effect.

Louver Height (inside):

4 in.
10.2 cm.

Louver Height (outside):

4 in.
10.2 cm.

Size of opening btwn blades (inside):

0.125 in.
0.3 cm.

Size of opening btwn blades (outside):

0.25 in.
0.6 cm.

Free Air Space:

113.1 sq. in.
729.7 sq. cm.

Free Air Space:

0.79 sq. ft.
0.073 sq. m.

1:150 Ventilation Rule:

235.62 sq. ft.
21.89 sq. m.

1:300 Ventilation Rule:

471.24 sq. ft.
43.78 sq. m.

The Venturi effect stimulated by even small breezes creates a positive movement of air out of the vent without the need of any part of the vent to move. This movement of air is proportional to the wind speed, and can be measured in Cubic Feet per Minute or Cubic Meters per Minute.

4 MPH Wind:

120 CFM
Airflow in 6.4 KPH Wind: 3.4 CMM

5.2 MPH Wind:

135 CFM
Airflow in 8.4 KPH Wind: 3.82 CMM

7.4 MPH Wind:

227 CFM
Airflow in 11.9 KPH Wind: 6.43 CMM

9.8 MPH Wind:

270 CFM
Airflow in 15.8 KPH Wind8: 7.65 CMM

11 MPH Wind:

310 CFM
Airflow in 17.7 KPH Wind8: 8.78 CMM
Click to enlarge pdf for print


Active Ventilation Products Aura Ventilator Retrofit product line is designed to fit over a turbine ventilator roof base. It has a flared adapter that easily fits over an existing roof mounted metal base. The Aura Ventilator Retrofit has a patented engineered design to create CFM (Cubic Feet per Minute) of air flow with no moving parts. Model AV-12-RF has a 12 in. Dia throat opening and will produce 310 CFM at 11 mph with no moving parts. It is an excellent choice to exhaust attic heat in the summer and moisture in the winter. The Aura Ventilator Retrofit product line is made of durable rust free aluminum and has 2 manufactured components: The vent head and adapter. The vent head’s patented design has three concentric cylinders with slotted vertical louvers. When air moves against the louvers of the outer and middle cylinders it is directed to create a circular airflow while spinning against the inner louver section. This air movement creates a Venturi effect which produces a vacuum or negative pressure to pull air from within the attic space. The vent has a flat one piece spun cap that prevents rain and snow from entering the vent verses the turbine vent which is open to the sky and allows rain water to enter in no wind conditions.

  • Easy to install
  • Noiseless, does not require electricity to exhaust air from attics spaces
  • Leveling is not required, the aura ventilator retrofit can be installed parallel to the roof
  • Built-in inner vertical louvers has an 1/8 in. opening between the louvers to keep out insects, birds and squirrels from entering the vent while allowing optimal air flow and no maintenance
  • Will reduce attic temperatures in the summer and will keep the attic dry and cool in the winter to preserve attic insulation and prevent ice dams
  • Round aerodynamic design can with stand harsh weather and wind forces of up to 200 mph
  • Mill finish aluminum color that will continually have a long lasting clean appearance
  • Net free air space: 113 sq. in.
  • Ventilation rule 1:300 (1 per sq. ft. of attic space): 1 vent per 450 sq. ft. of attic space
  • Helps to reduce energy costs
  • 5-year warranty