Windkat is available in a variety of popular sizes to fit most flue pipes, chimney pots and chimney stacks. Windkat for Chimney Stacks without Pots comes in 6 popular sizes from 125-300mm and is installed by fixing (with screws) to the top of relatively flat chimney stacks (usually of brick or concrete/cement construction in the UK). Simply choose the Windkat size that is equal to or larger than the internal diameter of your flue. The Windkat diameter should be as close as possible to the size of the flue, but never smaller for this configuration. e.g. if your flue at the top has a diameter of 190mm you should choose the Windkat 200mm and not the Windkat 180mm. See the size Guide here We include a tube of heat resistant silicone to seal the fit between the baseplate and the chimney stack. We can manufacture Windkat to virtually any size by special order.
