... compressor; Microcomputer control chip; Reliable and steady performance; Low noise Roof Mount RV Air Conditioner Technical Data: ModelNBRV40BCooling capacity3.5KWRated Output220VAC,50Hz ... powerful, dependable, and easy to install; just drop over the roof vent, hook up the power and enjoy your stay as ... in various sizes to fit any RV, camper, or trailer. Roof Mount RV Air Conditioner