Upgradable Manual Transfer Switch, Max. Wattage 12,000, Max. Amps 50 A, Required Main Breaker in Load Center (Amp) 50 A, Height 15 13/16 in, Width 15 13/32 in, Depth 4 in, NEMA Enclosure Type 1, Number of Circuits 16, Number of Spaces 16, Enclosure Material Aluminum, Voltage 120/240, Warranty 5 yr, Gray, For Use With GP15000E, GP17500E, XG10000E, XP10000E, Ground Bar Kit Mfr. No. 0K9607, Includes Pre-Wired Whip, Max. No. of Tandem Breakers 2, Mount Wall, NEMA Connector CS6377, Phase 1