Coleman-Mach 41-0013 Non-Ducted Ceiling Assembly For Wall Thermostats Plenum Only White. If your RV has high ceilings then this ceiling assembly is the perfect solution for you This device is compatible with select Mach 1 Mach 3 Mach 8 Mach 15 and Roughneck series air conditioners. Exclusive EZReach Filter System provides quick access to the washable air filter. Simply loosen the fastener and swing out the grille to remove the filter. An optional heat strip is available and sold separately. Use Coleman-Mach's 47233-4551 Electric Heat Kit for 4700 series air conditioners and Coleman-Mach's 9233A4551 Electric Heat Kit for all other Coleman air conditioners. Features of Coleman-Mach 41-0013 Non-Ducted Ceiling Assembly For Wall Thermostats Plenum Only For use with wall thermostats (Coleman-Mach 8530A3451) Compatible with select Mach 1 Mach 3 Mach 8 Mach 15 and Roughneck series air conditioners Exclusive EZReach Filter System provides quick access to the washable air filter An optional heat strip is available and sold separately. Use Coleman-Mach's 47233-4551 Electric Heat Kit for 4700 series air conditioners and Coleman-Mach's 9233A4551 Electric Heat Kit for all other Coleman air conditioners Control box sold separately (Coleman-Mach 9330C755) Package Contents: Coleman-Mach 41-0013 Non-Ducted Ceiling Assembly For Wall Thermostats Plenum Only Coleman-Mach 9330F4552: 41-0013 Non-Ducted Ceiling Assembly For Wall Thermostats Plenum Only White