Low Voltage 300 Watt Contractor Series Transformer. Dimensions Length = 13.0 Inch, Width = 5.55 Inch, Depth = 5.51 Inch. Kichler'S Contractor Series Provides The Best Options And Flexibility Needed For Most Installations. Output Voltage Will Suit Most Jobs. Features Include A Commercial Grade Toroid Core And Coil Submersible Rating, Pluggable Timer And Photocell Outlets Plus A 10 Year Warranty.