Rheem MR20230 Marathon point-of-use Electric Water Heater 20 Gal. Rheem MR20230 Marathon point-of-use Electric Water Heater 20 Gal. Features: • Seamless, blow-molded, polybutylene tank - impervious to rust and corrosion • Multiple layers of filament wound fiberglass give the tank unmatched strength • Polyurethane Envirofoam™ insulation helps reduce energy consumption • The most energy efficient in its class • Recessed drain valve is out of the way of brooms and scrubbers • Tough molded polyethylene outer shell resists dents and scratches • Bowl shaped bottom allows complete sediment draining • High temperature polysulfone dip tubes • All plastic tank eliminates the need for an anode rod • Thermally fused element to protect tank against dry-fire; low watt, density for long life. • Factory installed temperature and pressure relief valve • Factory installed vacuum relief valve • Inlet and outlet connections are 3/4 NPT • Water tight grommets keep out overhead moisture and condensation
More »Rheem MR20230 Marathon point-of-use Electric Water Heater 20 Gal. Rheem MR20230 Marathon point-of-use Electric Water Heater 20 Gal. Features: • Seamless, blow-molded, polybutylene tank - impervious to rust and corrosion • Multiple layers of filament wound fiberglass give the tank unmatched strength • Polyurethane Envirofoam™ insulation helps reduce energy consumption • The most energy efficient in its class • Recessed drain valve is out of the way of brooms and scrubbers • Tough molded polyethylene outer shell resists dents and scratches • Bowl shaped bottom allows complete sediment draining • High temperature polysulfone dip tubes • All plastic tank eliminates the need for an anode rod • Thermally fused element to protect tank against dry-fire; low watt, density for long life. • Factory installed temperature and pressure relief valve • Factory installed vacuum relief valve • Inlet and outlet connections are 3/4 NPT • Water tight grommets keep out overhead moisture and condensation