Introducing Magnetic Fluorescent Light Covers for Ceiling Lights Classroom - Stained Glass! Our magnetic ceiling light covers are not only safe, but they have also been fire-rated, ensuring that they meet the highest safety standards. The universal 2x4 size makes them easy to install on both fluorescent and LED ceiling light fixtures. The best part is that these light covers have magnets that easily attach to the metal ceiling grid, so you won't need any special tools or equipment to install the