Feit Electric's 4 ft. LED Hydroponic blue and red spectrum Grow Light uses 240-Watt and comes fully assembled to be hung or flush mounted vertically on racking installation. This no-humming LED emits precise wavelengths and color for superior photosynthetic response in both the 450nm blue with majority in the 655nm red spectrum preferred for budding and flowers. There are no lamps to dispose of or replace with this 4 ft. vertical grow light. With its cool operation, it prevents burning of leaves compared to high pressure sodium lamps. includes all the parts and instructions needed for either hanging or flush mount with clamp installation on a rack. Our grow light has a IP65 rating and a durable aluminum housing which protects our grow lights from direct exposure to water and dust and makes them suitable to be used outdoors. Our long lasting 25,000 hour grow lights will cut down the costs and time replacing incandescent and fluorescent lamps while also providing energy saving LED light.