6G40S-34F3 NATURAL GAS WATER HEATER 40GAL Short 21"x49.25" | The Richmond Essential Plus 40-gal Natural Gas Water Heater comes with a 2 years In Home Labor Warranty and has an energy efficient 34000 Btu burner featuring reduced emissions Low-NOx technology. This heater provides ample hot water for households with 2-3 people. Its short profile allows this water heater to fit into spaces a taller model won't while increasing ease of installation. The heater also features an FVIR System, an exclusive air/fuel shutoff device that prevents ignition of flammable vapors should they be detected outside the unit. The air intake is designed to be completely maintenance free with no filters to clean or replace.