300W stainless steel transformer with three foot 12 gauge cord with grounding plug and thermal protection in the primary circuit to avoid overheating. Multiple secondary taps allows maximum light output and lamp life for long or short runs and loading. -- Stainless Steel construction, Multiple taps (12, 13 and 15 volts) allows maximum light output over long or short runs and loading variations., 5-3/8 In. Diameter x 17 In. Height, Plug-in timer and photocell compatible (order separately)