Educational Insights Fluorescent Light Filters (Whisper White), Set of 4 REDUCE HARSH GLARE THAT CAUSES HEADACHES: Eliminate the harsh glare, flickers, eyestrain, headaches, and anxiety caused by typical fluorescent lighting! EASY INSTALLATION: Fabric panels fit easily over standard ceiling fixtures with sturdy, sewn-in magnets, creating a soothing, calming environment. HEAT RESISTANT AND CERTIFIED SAFE: Includes four 2' x 4' heat-resistant panels in Whisper White, and Certificate of Conformance for flame retardancy. CREATE A CALM AND PLEASANT ENVIRONMENT: Light filters set a relaxing atmosphere for learning.