Metro Lighting can build almost all of our fixtures with GU24 sockets, to fit GU24 LED or CFL light bulbs. Title 24, California's energy code, requires many fixtures to be high-efficacy, which means that they will only work with high-efficiency light bulbs. Metro Lighting fixtures with GU24 sockets are Title 24 compliant and U.L. listed. Why buy lights you don't love just to pass inspection, when you can satisfy the code with beautiful, sustainable, handcrafted fixtures from Metro Lighting?