Port-A-Johns often are very repulsive. This design allows the solid waste area to be totally isolated most all the time, enhancing both appearance and sanitation. Liquid waste drains out side slots, while solid waste gate remains closed. Further this system incorporates a wiper blade that swipes waste away and out of sight, similar to flushing, improving appearance and sanitation even when solid waste gate must be opened. Scroll down for large photos. Note LINK ONE includes further and vital information relevant to most all systems.