4 FT LED Surface Ambient Luminaire, Utilizes Cree TrueWhite Technology; Constructed of durable 22 gauge steel; Acrylic lens delivers a low-glare, diffused light distribution; Prepainted white for enhanced smooth finish; Unique combination of reflective and refractive optical components achieves a uniform, comfortable appearance while eliminating pixelation and color fringing; Components work together to optimize distribution, balancing the delivery of high illuminance levels on horizontal surfaces with an ideal amount of light on walls and vertical surfaces; Designed to last 50,000 hours; Temperature Rating - Designed to operate in temperatures -28 DEG C to 35 DEG C; Total Harmonic Distortion - Less than 20 PCT; Suitable for damp locations; Designed for indoor use