These beautiful fabric light covers filter out the harsh glare from overhead lights to create a calmer and more soothing classroom environment. They can also reduce headaches and eye fatigue by subduing overwhelming fluorescent and LED light bulbs. Filters are easy to install and fit most 2' x 4' ceiling light fixtures with 10 extra-strong magnets that help prevent the fabric from sagging. The fire-resistant fabric conforms to fire safety standards. Includes 4 fabric covers, each measuring 2'x 4'.