Available in Red, Buff and Blue Black. in stock. This cowl is manufactured in stainless steel grade 316, and is suitable for 200mm diameter pipes and ducts. We also offer cleanings, chimney liners both masonry and stainless steel,masonry applications, and everything relative to the up keeping of your chimney. It also stopped fumes from entering the house other chimney. The Traditional 'H' Cowl is designed to ensure that no matter what the wind direction or strength the flue or chimney is protected from downdraught.