Ducted Ceiling Assembly Kit, FlashFreezeThe innovative Advent ducted ceiling assembly with Flash Freeze provides a shower of refreshing crisp air that radiates directly downward from the upper unit to cool an RV quickly and efficiently. In addition, form follows function with the improved, curved cosmetics of the louvered openings, departing from the rigid industrial look of other ceiling assemblies. The unit easily installs in standard vent openings and is compatible with all Advent ACs and analog or digital thermostats. Includes ceiling assembly, digital thermostat, and digital relay.