This system adjusts as your plants grow, providing optimal conditions for their development. The Jump Start T5 Grow Light System can be raised and lowered as needed - inches away for germinating seeds and farther away for sprouted seeds, cutting starts and even houseplants. The included timer allows for a convenient 12-hour on/12-hour off or 18-hour on/6-hour off schedule. Cool T5 full daylight spectrum bulb is twice as efficient with 15-20% more light intensity than ordinary grow lights. 99% reflective material for maximum growing results. Includes 4' light stand, T5 light fixture with bulb, and 6' grounded cord with on/off switch. Easy assembly. 60Hz. 24W. 120V. 48" interior width fits standard seed trays/propagators. 31.75"H x 18.25"W x 50"L.