Ease into indoor growing with our modular system. Each Stack-n-Grow Light unit has two 3' long, full-spectrum energy-efficient LED bulbs that are spaced for optimum light coverage. High-tech reflectors direct light down onto plants for healthier growth and less glare. Fast no-tools assembly, and everything stores compactly in the off-season. Includes wall brackets for upper unit for additional stability. Important: When stacking units, prevent water from dripping from upper shelves onto the light fixtures below by placing our Small Boot Trays (32-709) underneath, or use other drip trays or saucers on each shelf.