Porta Potti 335 Marine Toilet with Hold Down Kit The Porta Potti 335 with the Hold Down Kit is a super compact portable toilet which is perfect to use on boats! The toilet is delivered with a special ‘hold down kit’ to attach the toilet to the floor of your boat, wherever you want. One simple action releases the toilet. Features: * White finish * Manual flush, piston pump * Integrated pour-out spout * Integrated cover-lock * Hold Down Kit Benefits: * Perfect for use on boats * Modern, refreshed design * Improved valve handle system * Improved carry handle of the waste holding tank * Improved seating comfort