Sewer Hose Hatch (D04-0471BKVP) by Valterra®. Color: Black. Carded. This black replacement sewer hose hatch is UV stabilized and will stand up to the sun for many years without fading. Made of tough long lasting ABS plastic it includes a pre-installed key lock and optional thumb lock for those who prefer a non-key lock hatch door. Designed for use with thin wall drain pipe (not included).