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-square-inch for each 4000 Btu score of water heater is needed in the upper and lessen twelve inches of the enclosure. In case the flapper https://longbeachplumber80234.oneworldwiki.com/6208466/long_beach_ca_plumber_no_further_a_mystery