We had someone in to price quote ours and I was devastated when he said it won't fit !!we have an original fireplace with brown glazed tiles in a pretty arch on the actual hearth ( too shallow apparently) with an outer arch in the same brown glazed tiles with a large Victorian wooden style mantel.he said that we would have to remove it and even then he couldn't guarantee it would solve the downdraft that we experience at the minutewith the open fire ....what to do?