http://tinyurl.com/pw4tehn<P>Briggs & Stratton 1918 50 Amp 10 Circuit Air Cooled Standby Generator Transfer SwitchProduct Review<P> Click on the link for more reviews<P>50 ampere standby generator transfer switch<P>12 circuits, NEMA 3R<P>Patented A/C power control module<P>Service entrance disconnect<P>Measures 14.5 by 5.5 by 21.2 inches<P>