Mr Fix It Plumbing 4320 Atlantic Ave #230, Long Beach, CA 90807 (562) 988-2454 http://www.mrfixitplumbing.com/ A combustion air opening in an exterior wall of 1-sq.-inch per 4000 Btu ranking of water heater is needed throughout the higher and reduce 12 inches of the enclosure. Diagnosing sewer line concerns hasn't https://www.google.com/maps?cid=4067949459714107514