Cylinder-shaped RCH Series includes 4 models that can heat enclosed area up to 2,500 sq ft without fans or moving parts. Available in propane gas or natural gas, heater is rated 95,000 Btu/hr or 100,000 Btu/hr, respectively. It also comes in manual or thermostatically controlled models. Measuring 32 in. tall, heater has 14 in. dia base, stainless steel emitter, and multiport cast iron burner head. Flame failure safety device is provided in case of flame outage.