USED good cond. 7" aftermarket water heater . was in my 1931 ford . this is a pic from the internet . for reference . mine is like this . ********************* free shipping*************** 13018 12 VOLT HOT WATER HEATER AND SWITCH 12 volt heater unit measures 7 inches wide X 7 inches tall X 7 1/4 inch deep. Comes complete with switch & instructions. This has 2 defrost ports, black finish & has front and side doors. 13000 BTU/HR. 2 speed motor draws 3.0 AMPS. Order plumbing kit #13014 separately. Not original.2003V P.236, 21A P.114,2012PT PAGE 125