These 4.5 in. LED puck lights are perfect for a variety of settings. They operate on 12-Volt DC, suitable for RVs, campers, trailers, boats, and marine vehicles, as well as tight spaces in your home. With 4 W low - power LEDs, they emit 280 lumens of 3400K warm - white light, providing a cozy and non - glare atmosphere. The installation is simple, with a cut size of 3.25 in. a diameter of 4.5 in. and a depth of 1 in. . It can be installed using springs or 3 included screws. Crafted from full aluminum, the housing has heat - diffusing and anti - corrosion properties, lasting over 50,000 hours, far more durable than plastic fixtures. ETL certified for RV safety, these lights can also replace certain OEM models. If you want to use them at home with 120-Volt AC, just connect them to a suitable transformer (not supplied). Upgrade your interior lighting today with these reliable and efficient LED puck lights.