LE 200W Dimmable UFO LED High Bay Lighting, 400W HPS/MH Bulbs Equivalent, 21000lm, Waterproof, Daylight White, 6000K, 120&deg; Beam, Super Bright Commercial Lighting, LED High Bay Lights Ultra-compact size.One-piece housing measuring only 16.54" x 5.9", much smaller than traditional high bay lights. Durable. Efficient cooling structure, much longer lifetime and quality of the high-power product is guaranteed. Safety and quality guaranteed. 3 years warranty. Dimmable. Works with 0-10V dimmer (not included). Save electricity bill. Replace 400W HPS (High Pressure Sodium) or MH (Metal Halide) bulb by 200W LED. Save over 50% on electricity bill of lighting.