1000W Interlux Super HPS Bulb- high pressure sodium Super HPS-bulbs are designed specifically for indoor enhanced plant growth and flowering. High Pressure Sodium has a light spectrum shifted towards the red, and is used during the flowering stages of growth. Tested and developed to work perfectly with electronic ballast. High lumen output and a wide color spectrum for maximum yield. Standard E39 Base. 1 year warranty. - 1000w super hps - Designed for indoor use - Light spectrum towards the red - Used for flowering stages of growth - Will Work With Any Ballast, But Designed Specifically For Hypotek Ballasts - High lumen output - Standard e39 base - 140,000 lumens - 1 Year warranty Case Quantity = 20