A complete land drainage kit comprising an 80mm (O.D.) x 100mtr coil of perforated land drain and a matching filter sleeve, supplied together.The perforated pipe collects and carries away excess ground water, while the filter sleeve fits over the pipe like a sock to stop sand and silt particles clogging the perforations. Larger particles bridge against the fabric, improving the permeability of the surrounding backfill andndash; a low cost alternative to expensive filter materials. The sleeve is easily fitted by one person.
