Unfortunately NYC is notorious for hack chimney sweep.such bad news...I must give this company a bad rating for not informing me of this before changing it nor giving a better option to consider...now to think that the one I had may have been a much better quality since I always cleaned it and was still looking good inside in over 15 yrs....with exception to the varied sizes it had inside......however, it did feel much stronger. but now I will have to keep a look out and inspect it more frequently over time while taking pics to see how it compares over time....but I will know after the first burning season ends while getting use to my new stove...