Windkat is the most effective anti-downdraught chimney cowl on the market.By using unique injection nozzles it provides constant even draw in any flue to which it is fitted - whatever the weather.Designed and engineered in Germany using the latest in aerodynamic research the Windkat is manufactured to the highest standards and specifications offering a genuine, reliable high quality solution to your smoky fireplace or stove.....what's more.... as well as reliably solving your downdraught problems, the Windkat offers extra unique features to differentiate it from competitors: A chimney pot and cowl all in oneIncrease efficiency + reduce pollution (constant even draw makes for efficient burning) No moving parts to wear-out or jam (Windkat will not fail as it cannot wear-out and jam like spinning cowls) Comes in two practical configurations for attaching to the flat top of chimney stacks or directly into metal flue pipes