This A.O. Smith Signature 100 50-gallon tall natural gas water heater delivers 40,000 BTUs of heating power. Model# G6N-UT5040NVR. Dimensions: 23.75"D x 60.75"H. Unboxed in store but in like-new condition with no damage noted. Features an energy-efficient design suitable for most residential applications. A high-value item at a significant discount.