The Colt Top 2 is a low cost anti-downdraught chimney cowl. Ideal for use with any fuel type and designed to match the majority of chimney pots. Introduced in the mid 90's this is a great value anti-downdraught cowl which has stood the test of time. Colt Cowls Colt Top 2 Cowl Advantages Robust design Suitable for all fuels with the exception of smokeless fuels (removing birdguard for solid fuels is recommended) Easy to use strap fixing in stainless steel. Maximum outside diameter of pot: 285mm Tested under new regulation BSEN 16475-7:2016 and BSEN-1856-1:2003 Specifications Internal Flue Size: 170mm to 250mmMaterial: Aluminium