1. Unoperated Roof Vent Utilizing the convection principle of natural wind and air, the turbo fan accelerates parallel airflow into vertical airflow, enhancing indoor ventilation. As hot air rises and cold air descends, the fan rotates, effectively expelling internal heat, odors, and dust. Energyefficient with no electricity consumption. 2. Multipurpose: Rotating hood designed for ventilation ducts, chimneys, and exhaust systems. The louvered design offers maximum protection without compromising chimney performance. Ideal for chimneys that are infrequently used. Features a stainless steel structure with thickened fixed feet and includes a complete mounting kit. 3. Protection: Made of thick stainless steel, the rotating chimney hood is antisinking and compatible with most standard chimney hoods. effective in wind resistance and ventilation enhancement. Protects chimneys from rain and moisture, making it especially suitable for those not in regular use. 4. Noiseless Rainproof: The roof vent operates silently. The closely spaced downwardslanted slats prevent rainwater from entering the ventilation system. The winddriven rotating design ensures stronger airflow—the more wind, the faster the blades spin, increasing exhaust efficiency from inside out.