This very easy to assemble kit is made of 1.5″ thick redwood side walls, pre-cut and taped 45 mil EPDM liner, and EPIC chamber with connections. The Premier Garden Kit are available in either a 4′ x 4′ or 2′ x 6′ dimension and are 16″ deep. Gardens can be connected together and sub-irrigated by gravity from a single water source. Very rugged and strong, it will provide a lifetime of garden use never needing tilling or seasonal “soil” replacement. All the plants grow in sand hydroponics. Local Delivery only.