20" high reflectance Aluminum hood. Corrosion resistant die-cast aluminum gear box with white electrocoat finish. Inductively coupled circular induction bulb. High power factor, low THD electronic ballast with surge protection. Instant-On flicker-free Cold Start and Hot Re-Start. High quality glare-free light with high CRI above (83). Bright white light (5000?K) for greater visibility and safety.