1930's-1940's Arvin Firewall Mount Heater For sale is an old ARVIN hot water firewall mount cockpit heater. The Arvin badge is gone, but I've had others marked Arvin that were just like this. I did not restore the cabinet to new. I've found many folks want the "old patina" look, which is difficult to duplicate. Attached pictures show the condition and dimensions. I freed up the rotating cabinet door front panel and shutters. Old enough that it's 6v. Needs new wires on motor, but fan spins. Some folks use these as speaker cabinets. The core has two plugs, top and bottom. I think bottom one is a drain and the top is to purge air out of the system. $75 + shipping