High Output 4-Ft Tek Light T5 Fluorescent grow lights. Black powder coated finish with a 95% reflective aluminum interior, back lit On/Off switch. Low heat factor allows the fixture to be hung very close to the plant canopy. Lamps included: Choose 3000° Kelvin lamps for flowering & fruiting or 6500° Kelvin lamps for vegetative growth or combine for full spectrum effect. 2-year fixture warranty. All Tek-Light fixtures use program start replacement T5 fluorescent ballasts.