Sunlight's High Output 4-Ft T5 New Wave Fluorescent grow lights. Economy priced with a 95% reflective aluminum interior, louvered and slotted for efficient cooling. Lamps included with fixture. Choose 3000° Kelvin lamps for flowering & fruiting or 6500° Kelvin lamps for vegetative growth or combine 6500K and 3000K for full spectrum all purpose growth. 2-year fixture warranty. All New Wave 4FT fixtures use program start replacement T5 fluorescent ballasts.