To close the ends of a xhannel use a cap with either plastic, stainless steel or cast iron edgings to match the channels. Closed caps are available in one size which fits all channel numbers at either end. If requred the closed cap can be split at two places where there is a V-groove.
Caps are also available with a hole and a rubber O-ring cast in horizontal outlet of 100 mm dia. The channel survey shows where to establish an outlet. The channels prepared for bottom outlet are supplied with a joint track around the recess. Use a suitable adhesive or jointing compound for sealing.