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No longer at the mercy of the weather. The iPower 400-watt High Pressure Sodium Bulb lets you grow better by providing reliability and performance. By concentrating its output around 550-600nm (yellow to red) wavelength of light, this bulb provides the essential spectrum needed for most plants on proper plant elongation, and maximized photosynthesis efficiency, proper fruiting, blooming, and flowering. * Weight 0.375-pound * Maximum power 400-watt * Base type Mogul E39 * Initial lumen (Lm) 55,000 * Color temperature 2,100 kelvin * Color index (RA) 20 * Expected Life Span 24,000 hours * Frequency (Hz) 60 * Bulb orientation vertical and horizontal * Non insect-luring * Great fog penetration * Compatible with all standard 400-watt digital ballasts Our customer service team can be reached at (626) 756-4797
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