201 Stainless Steel Roof Ventilator Wind Turbines Air Vent Attic Ventilator Pipefit Roof Ventilating Fan Technical Specifications: Color: Silver Material: 201 Stainless Steel Size: 300mm (11.8"") 400mm (15.7"") Features: 1. Roof Ventilator is sturdy, durable and weather resistant materials. It offers the performance of standard roof venting systems but in a slimline, low finish which is designed to releases your trapped air in your roof space by as much as 50 degrees in just minutes. 2. This Roof Ventilator is a dependable rotary that works automatically, continuously and silently without operating or maintenance costs. 3. Stainless steel dual ball bearings with integrated molded shield to protect bearings raceway. 4. Internally and externally braced; permanently lubricated ball bearings. 5. Ideal for residential or light commercial use. Package Contents: 1x Roof Ventilator Notice: 1. Please allow 1-3mm error due to manual measurement.Pls make sure you do not mind before you bid. 2. The color may have different as the difference display,pls understand. Product type: Other Auto & Motorcycle Equipment