- Suitable for use in chimneys with coal, natural gas, and pellets. For wood fireplaces, the chimney should be at least 5–6 meters long, as high flue temperatures can impair the function of the bearing. - Made of stainless steel, lightweight and weatherproof. Easy and quick to install on the exhaust pipe. The stainless structure is 304 stainless steel with material thicknesses of 0.4 mm and 0.5 mm, and it features a durable ball bearing base. - Prevents backdraft of exhaust gas, facilitates suction, improves combustion, and protects the chimney from rain or snow. It also helps prevent wind from forcing into pipes, chimneys, stoves, and similar installations, reducing the adverse effects of backflow. - The accessories include quiet-rotating ball bearings. The cap is designed to rotate under wind influence; stronger wind causes the blades to turn more frequently, increasing the air intake from inside to outside.