Coleman Mach 9430E7153 Deluxe ChillGrille RV Air Distribution Box w/ Manual ControlsThis is the Air Distribution Box (ADB) for the interior of the RV. It connects to the air conditioner with four bolts, sealing the A/C to the roof. The ADB also acts as a divider for the interiors intake and discharge. The ceiling controls allow for simpler wiring and the convenience of the controls be easily accessible.Manual Controls: Adjust temperature and fan speed with simple turn knobsLow Profile Design: (just 2″ thick) leaves more headroom in the cabinSimple Wiring: 12V not required, only 115V AC power is necessaryPOP-OUT Retainer Grilles for easy, tool-free access to the washable air filtersHeat-Ready Design: compatible with an electric heat strip for added warmth on chilly days (sold separately and not compatible with Mach 8 models) ChillGrille with Omni-Directional LouversThe innovative ChillGrille design features omni-directional louvers that allow you t