CR 18
Base Type/Log Set Type: Vent Free/ Ceramic
BTU/H Output: 32,000 
Efficiency Rating: 99%
Thermostat Control: Millivolt or Modulating 
Fuel Source: L.P. Or Natural Gas 
Hi to Lo Flame Control: Yes 
Piezo Matchless Ignition: Yes 
Oxygen Depletion Sensor: Yes 
 
CR 24
Base Type/Log Set Type: Vent Free/ Ceramic
BTU/H Output: 40,000
Efficiency Rating: 99%
Thermostat Control: Millivolt or Modulating
Fuel Source: L.P. Or Natural Gas
Hi to Lo Flame Control: Yes
Piezo Matchless Ignition: Yes
Oxygen Depletion Sensor: Yes
 
CR 30
Base Type/Log Set Type: Vent Free/ Ceramic
BTU/H Output: 40,000
Efficiency Rating: 99%
Thermostat Control: Millivolt or Modulating
Fuel Source: L.P. Or Natural Gas
Hi to Lo Flame Control: Yes
Piezo Matchless Ignition: Yes
Oxygen Depletion Sensor: Yes
Aftermarket Manufactured Home Approved: Yes