GAF cools attics more efficiently with its new Master Flow Green Machine Solar Powered Ridge Vent. It circulates 25 times more air than traditional ridge vents, and its low profile makes it less obtrusive than a conventionally powered vent, the manufacturer says. The vents do not require an electrician to install. By capturing the sun's energy, the ridge vent eliminates the operating costs attendant with electrically powered vents, thus lightening the load on the home's air conditioning system. 877.423.7663.