Progress Lighting P8776-09 250-Watt Flex Track Electronic Transformer, Brushed Nickel Brushed Nickel Finish Electronic surface mount transformer provides power for Illuma-Flex track system Size: 9-5/16-Inch Width, 4-3/4-Inch Height 9-3/8-Inch Diameter x 4-3/4-Inch Height Progress Lighting has over 5,000 lighting fixtures offered in our catalog, the largest single source for residential and commercial lighting