HiyoSilver999
cold air return
Look for the metallic structure directly under the auxiliary water tank. This is the cold air return for the propane heater. The actual duct comes up through the floor, terminates 2 inches above the floor and has a grill in place. And you see the metal box has holes in it acting as yet another grill face. This doubly prevents foreign matter from getting sucked toward the heater. It also made a great, but tight fit, for the extra water tank.
cold air return
Look for the metallic structure directly under the auxiliary water tank. This is the cold air return for the propane heater. The actual duct comes up through the floor, terminates 2 inches above the floor and has a grill in place. And you see the metal box has holes in it acting as yet another grill face. This doubly prevents foreign matter from getting sucked toward the heater. It also made a great, but tight fit, for the extra water tank.