This Robus 28W 600 x 600 LED panel has been designed to reduce glare as much as possible in most installations. It has been made to fit standard 600 x 600 ceiling tiles for offices hospitals and other environments where screen and desk usage is high. With the equivalent output of a 4x18W T8 fitting this 3200 lumen LED panel is a must have lighting solution for commercial spaces. It comes with a 5 year guarantee period and an impressive average lifespan of 50000 hours.