It was made to fit the heater, installed easy and works great. It was fast, no extra parts to buy all parts was in the kit. I would buy it again if i needed another one.

I had looked all over for a category 3 flue for our heaters. Thank goodness I found them here! While expensive (like everything else these days), this is what we had to have for our install. Just glad to find a place that sells them.