iPower 1000 Watt Double Ended Enhanced Performance High Pressure Sodium HPS Lamp Bulb Save 35% extra Energy l HIGH LUMEN OUTPUT: Great lumen output for high PAR values. Lumens: 151,000. Color Temp: 2300K. Quality quartz glass jacket l MORE ENERGY PROVIDER: High red and blue spectral ratios for good photosynthesis efficiency, Provides 35% more available energy than the high standard pressure sodium lamp l GOOD FOR PLANT BOOSTING: Optimized spectrum encourages flowering growth. DIMMABLE (50% to SUPER) l SPECIAL DESIGN: The absence of frame wire eliminates any shadows in the beam. Specifically designed for high frequency electronic ballasts. l NOTICE: For horizontal burning only and do not handle with bare hands. 1 year manufacturer warranty