Richmond Rmtg-66xp Outdoor Propane LP Tankless Water Heater 11,000-180,000 Variable BTU; Same unit as Rheem's RTG-66XP 6.6 GPM @ 45 degree rise; 4.0 GPM @ 77 degree rise UMC-117 remote thermostat; includes water heater, remote thermostat, Gas shut-off valve, Manual 3/4" water and gas connections; Designed for a 2-3 bathroom home Full manufacturers warranty: 10 years on heat exchanger, 5 years on other parts, 1 year labor