NEW SLIM DESIGN! FITS THROUGH MOST DOWNLIGHT HOLES.DIMENSIONS: 227mm x 63mm x 30mm (L x W x H)400W 24V Constant Voltage Non-water proof LED Driver for LED Strip lighting. IP21 hence non-waterproof so suitable for indoor use only. Range of sizes from 60W / 100W / 150W / 400W400W 24V DC LED Drive..