Organic Gardening wood Planter box TherMod Duo3S Made from Thermally Modified Wood by PEFC Certified Manufacturer NO CHEMICALS USED TO TREAT WOOD. Resistant to insects and pests, will not mold and is maintenance free. Ideal for organic gardening. Modular product with reversible surface - choose the grooved or plain face of boards to face outward. Assembles and unassembles in minutes. Interlocking pieces, no hardware needed. Can be customized for higher or lower height, by adding finials, legs and/or lid, and connecting bench(es) and planter(s). Aprx. soil capacity 5.6 cubic ft.