The Chimney Cowl Cap rain cowl arranges an ideal combustion and furthermore it protects the chimney from outside influences like rain or snow.The bird guard is manufactured from rugged aluminum structure. It prevents any bird penetration whilst providing increased rain or snow protection. Suitable for use with coal, wood, gas, oil and smokeless fuels. Applicable to GSPS and PPS type pipes, avoiding rainwater intrusion, improving ventilation efficiency and reducing wind resistance.Highly effective at preventing downdraught.Specification:Material: AluminumColor: SilverScope of application: GSPS and PPS pipe with inside diameter 108mm,133mm,158mm,210mmPackage Includes:1 x Aluminum chimney capIf you have any doubts about the product, please send us an email, we will give you a satisfactory reply as soon as possible