Tork Power Roof Ventilator (PRV) Mushroom Type Fan is ideal for exhausting hot stale air and helps fresh air to go inside the inlet vents. This fans is suitable for all types of residential, commercial and industrial buildings such as schools, hospitals and warehouses. 
 
Sizes from 12" to 48"
Max Capacity of 38,100 CFM
Max Pressure of 1 1/4"W.G.