Ventilator Comparison Table

moffittvent natural ventilator by Moffitt
MoffittVent
Coefficient of Discharge
Very High
Throat Sizes
24” - 180”
Unit Length
10' - 1000'
Damper
Motorized or Manual
Structural Connection
Yes
Construction
Steel Framework with Sheeting
Ideal Applications
High heat
Key Benefits
Lower First Cost, Effective at wind-speeds 130 MPH+.
MoffittVent-HE
MoffittVent-HE
Coefficient of Discharge
Highest
Throat Sizes
24” - 180”
Unit Length
10' - 1000'
Damper
Motorized or Manual
Structural Connection
Yes
Construction
Steel Framework with Sheeting
Ideal Applications
Very high heat
Key Benefits
Highly efficient, More efficient than the MV
labyrinth
Labyrinth
Coefficient of Discharge
Medium
Throat Sizes
10' - 20'
Unit Length
10' - 1000'
Damper
Motorized or Manual, not recommended
Structural Connection
No
Construction
Aluminum Construction
Ideal Applications
Medium to High heat
Key Benefits
Ideal for retrofit applications, low-wind load; 3 lbs/ft2.
ridgepac
Ridgepac
Coefficient of Discharge
High
Throat Sizes
4" - 24"
Unit Length
10' - 1000'
Damper
6" Chain; 9"+ Chain or Motor
Structural Connection
No
Construction
Sheet metal construction
Ideal Applications
Low to moderate heat
Key Benefits
Light-weight, preassembled in 10' sections.