Raised bed grow box combines a 30 x 18 x 24 in elevated frame with a self-watering system so you can tend plants without bending and help keep soil moisture more consistent. A 2.4-gal water storage box works with a water level monitor, letting you keep moisture in the green range to reduce over soaking. The water-proof board with holes separates soil from the reservoir while allowing roots to draw water. Durable PP structure supports up to 66 lbs for outdoor planting in gardens, backyards, balconies, or patios.