No Power Roof Turbine Vents for Industrial, Commercial, and Residential Use 20":
Our Roof Turbine Vents are dependable rotary turbines are available in Galvanized Steel, Stainless Steel. They work automatically, continuously and silently without operating or maintenance costs.
Outside braced for strength, safety and perfect alignment. Ventilators up to and including 14 inch diameter are aluminum braced. Larger sizes are steel braced for additional strength.
Operation is simple and sure. When the slightest breeze touches the aerodynamic blade construction it causes the turbine to rotate. The centrifugal force caused by the revolving turbine creates a partial vacuum within the turbine. This vacuum is then replaced by a strong upward draft of air. A powerful exhaust is thus achieved.
Precision Built With Ball Bearings. The lower thrust bearing is a hardened steel ball riding in a hardened steel concave seat (in sizes up to 8 inch diameter) for extreme sensitivity and wear ability. In larger sizes, thrust type ball bearings are used. Upper bearings on all ventilators are bronze oil less.
The rigid construction of these storm proof ventilators assures years of efficient service.
No adjusting or servicing is required.
Application: Removes heat, vapor, gasses, odors, smoke, solvents, and humidity.
Used for: ventilation in small and large areas, exhaust pipes, bathrooms, warehouses, factories, commercial buildings, and all large projects of ventilation. The turbine can operate up to temperatures of 150 degrees F.
Warranty: Manufacturers Limited Warranty: 2 Years
package: product not assembled for easy transport. comes in a carton.