The Bottom Outlet for BG-FILCOTEN® 100 trench drain channels enables a vertical outlet connection from the bottom of the channel. To install, locate the embossed area found on either end of the channel, carefully drill around this area and remove. Apply silicone to the bottom of the channel and the Bottom Outlet, align outlet with the drilled out area, and press down firmly for a secure hold. Made of galvanized steel, the Bottom Outlet connects to a sweep 90° elbow or flexible coupling to transition to DWV pipe.