SGL 4-pack 20Watt 6 inch UL-classified Dimmable Retrofit LED Recessed Lighting Fixture - 2700K Soft White LED Ceiling Lights - 1500 Lumens 150W Equivalent Recessed Downlight Listed in cUL/UL [E467028], Aluminum Alloy Body with Built-in Trim Ring, high safety is no doubtly assured Maybe the retrofit light is the most brightest in 6 inch recessed downlight, designed with 1500 lumens output can replace 150W conventional incandescent It can be easily installed without using any tools just with strong well built springs to hold up light.Please refer to the picture of the installation process Dimmable. Works with most of dimmers but to ensure flicker free dimming, please use with silicon-controlled rectifier type dimmer Up to 36,000 hours rated life, reduces the hassle of replacing bulbs so often