No bulbs required. This Mainstays light fixture has energy-efficient, high-quality LED’s built-in that will last for 50,000 hours of operation (about 45.7 years based on 3 hours/day usage). Say goodbye to replacing light bulbs! The on-board switch allows you to choose between three different color temperatures of light, ranging from soft warm white to cool daylight. It works with most dimmer switches, and is dimmable down to 10%, allowing you to choose the best ambiance for your room. The light weight metal base and durable plastic lens both make installation quick and easy. 1400 lumens of light will provide the brightness you would expect from a traditional 75W equivalent light bulb. Ideal for use in hallways, bedrooms, bathrooms, closets, kitchens, laundry rooms, attics, basements, living rooms, and more!