(2) Heavy Duty Black Mounting Brackets For Grommet Mounted 4" Round Lights Dimensions are approx. 6" Wide by 6" Tall and has a lip 1 1/2" for the mounting application. The cutout opening is approx. 4 1/2" in diameter. These brackets are .128" thick which provides strong, solid support. Black powder coat finish. The brackets can be mounted in a variety of positions to fit many different applications. Pre-Drilled holes for easy installation. Eliminates the need to make precise cutouts for Round Light installations. Additional Brackets both Round and Oval are available in our store.