Aura Ventilator Retrofit kits will easily fit over old bases and old turbine bases. Easy quick installation. Balancing is not required, just slip the new vent over an existing base. The Aura Vent Retrofit will never rust, no maintenance required and snow or rain will not infiltrate inside the Aura Vent. It is quiet and will never wear out due to no moving parts!
Table below denotes CFM performance at various wind speeds.
4 MPH: 558
5.2 MPH: 572
7.4 MPH: 877
9.8 MPH: 987
11 MPH: 1,128
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