Deeper and wider than traditional troughs, the Border Concepts XL Traditional Wall Trough with Liner is designed to allow for better soil moisture retention. With its strong, flat-bar, powder-coated steel construction, this trough is made to withstand the elements. Available in different lengths, this trough also includes a preformed coconut liner that is held together with natural tree sap to support growth for several growing seasons. * Strong, flat-bar steel construction * Powder-coated steel for strength and durability * Features more depth than traditional troughs * Holds more moisture in warmer climates * Available in different lengths * Measures 9W x 9 diam. inches