Kenmore 50 gal. Tall Natural Gas Water Heater (33205) —
When I discovered that my existing utility flue was inadequate for a "traditional vent" hot water heater, I had no choice but to go witha power-vent model, which vents out the side of my basement wall with ordinary 3-inch PVC pipe.
This is one outstanding product! But, then again, it is a Kenmore, from which I have come to expect nothing less than the best!
It is extremely efficient, very well made, and we have no shortage at all of hot water, now. (We previously had a 13 year-old 30-gallon model).