Thetford's new, premium portable waste tanks bring it all together in a sleek, easy to use design. The innovative design saves time, effort and hassle. This ingenious tank is in a class by itself. Completely self contained so there are no required accessories to buy or parts to store. Each model has up to 20 percent more capacity than competitive models for fewer fill ups saving time and effort. PermaStore Self storing sewer hose stays connected at bottom of tank Cradle pivots, hose extends for quick, clean hookup Bayonet cap prevents spills; just pull out, connect to fill or empty AutoStop Level Gauge/Valve stops flow when tank is full to prevent messy over filling!