The Parallax 7400 Series Electronic 30 Amp Converter/10 Amp Charger electronic converter/charger provides quite, ultra-clean, filtered DC power enabling electrical systems to meet the sophisticated needs of todays recreational vehicles. The Parallax converter/charger provides filtered power that is free from spikes or surges that hinder electrical systems and accessories. The 7400 series delivers a bright, flicker-free light and gives you smooth appliance operation. With an FCC Class B certification that means you get minimal interference with TVs, radios and emergency channels. Full output available for battery charging. UL/CUL listed. (Note: This unit requires an AC/DC Distribution Panel, not included.) Dimensions: (Compact size) 4-1/8 inch H x 7 inch W x 12-3/8 inch L.