Ceiling air fan powered by wind — base 495×495 mm, diameter 300 mm, 25-year warranty

Improve building ventilation in an economical way with the rotary air fan. A turbine design captures the wind and converts it into continuous rotation movement that pulls hot air, humidity, and odors outside without electricity consumption. Suitable for roofs, chimneys, restaurant kitchens, warehouses, and water tanks. Available in two material options: galvanized steel for affordability and durability, and 304 stainless steel for higher corrosion resistance. Comes with a base size of 495×495 mm and a diameter of 300 mm, 100% Italian manufacturing with a 25-year warranty against corrosion, rust, or stopping rotation. Features: - Operates solely on wind without electricity or complex maintenance - Reduces heat and humidity and improves indoor air quality Material options: galvanized steel or 304 stainless steel Suitable for chimneys, warehouses, water tanks, restaurant kitchens Base size 495×495 mm for fixed ceiling installation Diameter 300 mm for effective air intake rate 100% Italian manufacturing 25-year warranty against corrosion, rust, or stopping rotation Specifications: Type: Wind-powered ceiling ventilation fan Material: Galvanized steel / 304 stainless steel Opening diameter: 300 mm Base size: 495 × 495 mm Uses: Chimneys, warehouses, water tanks, restaurant kitchens Warranty: 25 years