The Brewer Aerodyne Cowl has been in constant production for about 50 years and has abundantly proven its worth in curing downdraught, showing that the laws of aerodynamics don’t change. As wind from any direction passes through the cowl the unique venturi shaped surfaces cause a drop in air pressure which draws smoke and fumes up the chimney for dispersal to atmosphere.

• Size 150mm to 300mm
• 6" to 10" inside diameter
• 1.2mm high amd made from Grade Aluminium Alloy


The Brewer Aerodyne Chimney Cowl is not suitable for Gas fires