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-sq.-inch for each 4000 Btu rating of drinking water heater is needed within the upper and reduced twelve inches in the enclosure. Our knowledge was https://williamh444brj3.wikilowdown.com/user