H Cowls are manufactured from stainless steel and are designed as anti-down draught devices. In normal or still air conditions, the hot gases and smoke pass up the chimney and exit out of the top of both of the vertical tubes.

H roof Cowl, 200mm Diameter, Anti-downdraught, backdraught, ducting, Ventilation, galvanised, Chimney wodburner Flue Cover

A cowl is a usually hood-shaped covering used to increase the draft of a chimney and prevent backflow. The cowl, usually made of galvanized iron, is fitted to the chimney pot to prevent wind blowing the smoke back down into the room below.

The H Anti Down Draught Chimney Cowl is a stationary cowl that is designed to solve bad down draught problems. Ideal for situations where there is a short chimney such as a single-story dwelling or bungalow. However, it is also very effective protecting longer …

The H Cowl is made from a durable corrosion proof stainless steel and is designed to fit the majority of conventional chimney pots. The H Cowl will prevent rain ingress and promote positive updraught. It has no moving parts once fitted and will be silent in whatever weather conditions.

Chimney Cowls. We are manufacturers, not just importers or retailers, of specialised cowls and chimney products. Our responsiveness to customer feedback and our own innovative approach to design has led to the development of our range of chimney cowls.

The H Chimney Cowl is probably the ultimate static anti downdraught chimney cowl, as it completely isolates the combustion gases from the prevailing winds. This cowl is manufactured in stainless steel grade 316, and is suitable for 125mm diameter pipes and ducts.

H COWL. What is it for? If you have a problem with downdraught and your chimney or flue is in an exposed condition with prevailing winds or turbulence, the H Cowl is probably the ultimate static anti-downdraught chimney cowl and has been used for many years to good effect.

Chimney Cowls from Top Cap. A selection of cowls and plugs for your chimney to help with downdraght, draw, rain,bird protection, H-cowls and spinners.

The Traditional 'Super H' Cowl is designed to ensure that no matter what the wind direction or strength the flue or chimney is protected from downdraught. As the wind passes down the top of the external parts, it creates a wind flow that exhausts the smoke and fumes out of the lower exits.