Miss. Code Ann. § 75-51-5: Miss. Code Ann. § 75-51-5

No individual, firm, corporation or business shall install, reinstall, relocate, sell or offer for sale any hot water supply storage tanks or heaters of one hundred twenty (120) gallon capacity or less which utilize dip tubes, supply and hot water nipples, supply water baffles or heat traps that have not been tested to withstand a temperature of two hundred twenty-five (225) degrees Fahrenheit without deteriorating in any manner, and such tank or heater shall be so labeled by the manufacturer.

No individual, firm, corporation or business shall install, sell, or offer for sale any water baffles or heat traps, which are not constructed and tested to withstand a temperature of two hundred twenty-five (225) degrees Fahrenheit without deterioration in any manner, and such baffles or heat traps shall be so labeled by the manufacturer.