TotalGrow High Intensity Top-Light 620W Bar

620W of power with 2.8 μmol/J efficacy for the light intensities your plants need Robust, reliable and streamlined design for simple utilization Side reflector add-on for uniform, efficient edge lighting Full spectrum for exceptional versatility The TotalGrow HI-Top generates an ideal light spectrum for diverse supplemental andsole source applications with a versatile output pattern, exceptional efficiency andprofound total value in a pleasant work environment. This plug-and-play solution issimple to implement, low on upfront and ongoing costs and makes it possible tosustainably grow high quality plants year-round over a very long lifetime.   Power: 620W Output: 1720 µmol/s Efficacy: 2.8 µmol/J Dimensions: 46" long x 3" tall x 3" wide; 17 lbs Dimming: 0-10V + 12V aux power Daisy-Chain Linking: up 2/4 units on 120V/240V (480V alternative version: up to 8 lights) Lifetime: 50,000 hours Warranty: 5 years Certifications: ETL, DLC Waterproof: IP65 Applications: Top-lighting in greenhouse