Hello, I installed my new Windkat on my stainless steel chimney flue and immediately tested the effect of it. We had high winds that I can only compare to the likes of autumn and spring storms. We lit our stove for the first time a few weeks ago and have not looked back since. The flames were calm and we had no smoke filling up the stove and trying to escape the seems. Its been a frustrating few years and we now look forward to a stress free winter. Thank you so much for your help and for such an excellent product. Attached are photos with our previous cowl which didn't work at all and the new Windkat Cowl. Greetings L. K.