Mr Fix It Plumbing 4320 Atlantic Ave #230, Long Beach, CA 90807 (562) 988-2454 http://www.mrfixitplumbing.com/ A combustion air opening within an exterior wall of one-square-inch per 4000 Btu rating of drinking water heater is needed in the upper and decreased 12 inches from the enclosure. Our devoted workforce of https://samuelc210ncq6.wikigdia.com/user