Special Assembly is a system that combines Allproof Slimline Grates and PVC channel with spigots at 200mm centres connected via downpipe droppers of varying lengths to achieve fall in the pipe below. This allows the channel to be installed level while drainpipe is given significant fall.

The Special Assembly is an excellent option for pool surrounds, courtyards and large level areas such as pedestrian areas, sporting grounds or car parks.