The RTS Home Accents Rock Lock Raised Garden Bed is an interlocking border system that looks and feels like natural stone. Achieve beautiful looking walls in just minutes with endless layout possibilities. The easy-to-assemble modules will give you a look and feel of rock walls while each section only weighs 9 lbs. The border system is suitable all year round and will not crack, chip or fade in any weather. Rock Lock will also extend your growing season as the hollow walls insulate the soil and plants. I for vegetable gardens, flower gardens, water gardens, retaining walls, sandboxes and playgrounds. Everything you need to make a 20" high and 48" square raised garden bed Look and feel of natural stone Easy to assemble Endless layout possibilities Suitable all year round Will not crack, chip or fade in any weather Extends your growing season as the hollow walls insulate soil and plants I for vegetable gardens, flower gardens, water gardens, retaining walls, sandboxes and playgrounds BPA Stack two layers high to create the 20" high raised garden Includes 8x Straight Rocks and 4x 28-inch spikes