Coleman-Mach 61351 Heat Ready Ceiling Assembly Lateral Ducted White. This ceiling assembly is the perfect addition to upgraded RVs and can be used with a compatible 12V DC wall thermostat. The Electric Heat Kit (#62763) can be added to the ceiling assembly (sold separately). Features of Coleman-Mach 61351 Heat Ready Ceiling Assembly Lateral Ducted Only for use with Coleman-Mach 8 lateral ducted air conditioners Perfect addition to upgraded RVs Can be used with a compatible 12V DC wall thermostat Electric Heat Kit (#62763) can be added to the ceiling assembly (sold separately) Package Contents: Coleman-Mach 61351 Heat Ready Ceiling Assembly Lateral Ducted Coleman-Mach 8530D735: 61351 Heat Ready Ceiling Assembly Lateral Ducted White