Pouralid PLC132 GRAY BOX 1-2 132" Gray Connectable Channel Drain System Box 1-2 - This is a 132" connectable channel drain. It is a rigid, durable, mold injected part made from hi-impact abs plastic. It comes with masonry trays to be filled with matching masonry materials and each set comes with end cap, couplings, and a 3" outlet giving different options to connect to other channels. Always preset the channel drain with trays separated by construction spacers provided to stabilize channels during construction, which will also give support for cardboard to lay on top to keep channels free of construction debris. Removable masonry trays are ready to put back into finished channel drains when masonry is cured, creating an innovative look of a masonry drain grate.