For classrooms with limited space and a limited budget. This plant stand includes eight 22" x 11" rugged plastic trays on four shelves-all in just four square feet of floor space. Stand is built to last of 1" square, polished aluminum tubing with dimensions of 70"H x 25"L x 23"D. Stand will accommodate up to four accessory light fixtures. Optional twin-bulb fixtures are reflective white aluminum with four chains for suspension from the frame. Chains are adjustable in1/2" increments to accommodate growing plants and to allow variation in light exposure. Fixtures are furnished with two 18", 15-Watt wide spectrum bulbs. Replacement bulbs are available.