Halogen Lighting Transformer 12V AC 300W Replacement for MDL Corp 316-0059 300 Watt 12 Volt AC Electronic Transformer Great Replacement for MDL Corp 316-0059 PLEASE CHECK DIMENSIONS TO MAKE SURE NEW REPLACEMENT FITS Item's Dimensions: L: 4 3/4" x W: 3 1/4" x H: 1 1/2" / Center Hole: 7/16" Ul Approved and Listed - Dimmable Unit