Manthorpe Plastic SlotDrain Drain Channel - Pack of 48 x 1m Lengths Description The Manthorpe SlotDrain is a discreet way of removing unwanted standing water from outside paved areas. Once installed, the only visible part of the drain is a 20mm wide slot. It is ideally suited to block paving coverings up to 50mm depth, but can also be used with surface finishes in areas around the home such as patios, driveways, paths and is especially well suited to part M building regulation thresholds. Other components are available to complete the system such as the SlotDrain Junction Unit and an Accessory Pack containing a Leaf Trap and Endcaps. The SlotDrain Junction Unit (GPDST-JU) is made up of 3 components; a channel base, an extension piece and a grate lid. In any run of SlotDrain, a Junction Unit should be used at each end to enable access for rodding and cleaning. In longer runs, a Junction Unit should also be placed at 3m intervals. Junction Units can also be used to create a 90 corner, a T-junction or a 4-way junction. Properties Lengths slot together enabling quick and easy installation. Can be cut down in length with a clip detail repeated at 6 points along the length. Multiple rainwater exit points with easy cut outlets. For use with standard 4 underground drain pipe. Junction unit allows easy access for rodding.