The Roof Extractor is a motor driven fan unit having cast aluminum alloy impeller, aero foil section blades and is provided with durable weather proof exhaust cowl. Discernible Features: Fan Size: 500 to 1200 mm Flow rates up to 100000 cmh Pressures up to 600 Pa ApplicationIdeal for extraction or air supply through roofs/ridges in industrial buildings, factories, power plants, steel plants, foundries, etc. Please refer to our complete product catalogue for further detail Click Here