1. Ensure good indoor ventilation: The rotary turbine can be installed on roofs, in conservatories, and other areas where air circulation is poor. Equipped with a durable ball bearing base, it requires only a small amount of wind to rotate automatically and operates silently. It can maintain fresh air indoors and provide round the clock ventilation without the need for a power supply. 2. Stainless Steel 304: Choose the size according to the outer diameter of your chimney. Our chimney caps are made of quality stainless steel 304, which is waterproof, rust resistant, and heat resistant. Due to the sturdy design, there is no need to worry about frame deformation. It can last outdoors for years in any weather, saving replacement costs. 3. Protects chimneys and flues: Installed on chimneys, the caps can withstand weather changes, ensure stable ventilation in adverse winds, prevent exhaust backflow, enhance exhaust efficiency, and improve combustion. They can also keep your chimney from pests, birds, rain, snow, leaves, debris, etc. 4. Quality Service: We provide quality products and service. 100% customer satisfaction is our goal.