Coleman-Mach 61360 Heat Ready Ceiling Assembly Lateral Ducted Without Thermostat White. Install this Heater Accessory from Coleman-Mach in an existing Coleman-Mach ducted RV air conditioner unit. Be aware that this Coleman-Mach 61360 Heat Ready Ceiling Assembly is only for use with Coleman-Mach 8 lateral ducted air conditioners and is not compatible with wall thermostats. The Electric Heat Kit (#62763) can be added to the ceiling assembly (sold separately). Compatible with newer models of Coleman-Mach 8 lateral ducted air conditioners with or without an Electric Heat Kit (#62763) installed. Features of Coleman-Mach 61360 Heat Ready Ceiling Assembly Lateral Ducted Without Thermostat Only for use with Coleman-Mach 8 lateral ducted air conditioners Perfect addition to upgraded RVs Not compatible with wall thermostats Electric Heat Kit (#62763) can be added to the ceiling assembly (sold separately) Package Contents: Coleman-Mach 61360 Heat Ready Ceiling Assembly Lateral Ducted Without Thermostat Coleman-Mach 8330D735: 61360 Heat Ready Ceiling Assembly Lateral Ducted Without Thermostat White