The unique, triangular shape of the FLEX ERA 3 lights can leave gaps when installed into enclosed locations like front bumpers with round cutouts. These shrouds are specifically designed to provide a gapless fit when installed into a 3.5 in round opening, while still maintaining a sleek and minimal appearance. These shrouds clip onto the front, outside lip of the FLEX ERA 3 lights for an incredibly quick install. With a tight and secure fit, they snap on and are sure to stay put during your next overlanding or rock crawling adventure.Lux at 10 Meters: 800 lxOur Round Universal Shrouds for FLEX ERA(R) 3 Lights are intended to be used when installing FE3 lights into areas such as fog pockets on aftermarket bumpers. Think of these as our solution to mounting a triangular peg into a round hole. These simply snap onto the front of the FE3 light and provide a sleek way to mount these lights in a 3.5 in diameter, round hole. From Toyotas to Jeep to anything in between, the Round Universal Shrouds help eliminate any unsightly gaps when installed in these applications.