DuraDrain Resilient Foam Drain Tiles assist in drainage and fall protection when combined with WoodCarpet, our Engineered Wood Fiber. The DuraDrain base panels feature milled drainage channels in the bottom. A DuraDrain panel consists of thermally fused, closed-cell polyethylene foam nuggets. The manufacturing process consists of pressure and heat to create a consistent layer of resilient cushioning and drainage. The panels can be installed on top of subsoil. If the subsoil is loose or sandy, a base layer of DuraLiner is recommended as a subsoil stabilizer under the DuraDrain. Available in one size and four thicknesses, the DuraDrain Resilient Foam Drain Tiles are 90-inches wide by 36-inches long by 3/4, 1, 1-1/2, or 2-inch thick.