The MAD Spinner Stainless Steel Chimney Cowl in Black is a high-performance, directional revolving cowl designed to eliminate downdraught and improve chimney ventilation. By creating a low-pressure zone just above the chimney pot through its rotating action, this cowl enhances the upward draw within the chimney, improving overall functionality and airflow. Built from premium materials, the base is constructed from durable die-cast aluminium, while the fins are made from spot-welded stainless steel for extra strength during rotation. The MAD Spinner is ideal for use with coal, seasoned wood, gas, and oil, making it versatile and effective in a range of applications. Available in Terracotta, Black, and Stainless Steel finishes, this cowl is perfect for both residential and commercial chimneys and is also commonly used on extraction flues at landfill sites.