The upgraded, double-walled Vantage portable restroom from PolyPortables includes self-closing hinges that operate from an internal stainless steel spring, a heavy-duty rotary latch that can withstand rough users, and re-engineered doorframes with a single jamb point for structural integrity. The enhanced mechanics coupled with a smooth, easy-to-clean interior makes it a versatile unit. Reinforced corners hold their shape with no exterior molding, and a wide range of skid and color options are available to match existing fleets. 800/241-7951; www.polyportables.com.