YBS Anti-Downdraught Chimney Cowl Aluminium

Aluminium and stainless steel. Aerodynamically designed and tested to combat the effects of poor drawing chimneys caused by downdraughts. No specialist tools required for installation. Suitable for use with gas, seasoned wood, normal coal and oil. Unsuitable for smokeless fuel applications. Where coal or seasoned wood are burned the mesh birdguard needs to be removed.