This polymer concrete channel with a galvanised grating has a load rating of 1.5 Tonnes, meaning that it can be safely used on domestic driveways, patios and garden borders.There is a 110mm outletandnbsp; to enable the channel to connect to standard PVC-u drainage.Each channel has a male and a female moulding on each end to enable lengths to be easily interconnected.The internal depth to the bottom of the channel is 120mm and the internal width is 100mm.