Xtrasun, 8" Air Cooled Reflector, Solidly Built, Compatible With All Hydrofarm Or Xtrasun Ballasts, Super Air Coolable, Made Of Highly Reflective European Specular Aluminum, Completely Sealed Hinged Lens System For Easy Bulb Exchange, Accepts Sodium Bulb Wattages As Follows: 250W, 400W, 430W, 600W, 750W, 1000W, Halide 250W, 400W, 600W, 1000W. CSA Certified.