I should have added that I used the same vent holes but did have to do a small amount of cutting to get the new configuration. I took the picture just before putting the camel away, though I did stop by during a pheasant hunt last december and ran the furnace it did fine even though it was smaller than what it replaced. I will eventually add a P9000 furnace because it sort of does double duty as a second furnace and a fireplace. That has been put off until next summer. The new ones work fine with a bit of cobbling
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