Low Voltage 1200 Watt CONTRACTOR SERIES Transformer. Dimensions length = 16.85 inch, Width = 8.3 inch, Depth = 8.27 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.