Standard Reflector E39 Base 1000 Watt Super HPS bulb compatible with electronic and magnetic ballasts. Super High Pressure Sodium's Light Spectrum Stimulates Flower Growth and enhances Fruiting. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Hydroponics\Grow Lighting & Accessories\Grow Lights & Light Bulbs". The seller is "beankicker13-1" and is located in this country: US. This item can be shipped to United States, Canada, Mexico, Bermuda.