Thetford Marine Potti 335 Marine Toilet w/Hold Down Kit Porta. 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. Specifications for Thetford Marine Porta Potti 335 Marine Toilet w/Hold Down Kit: Manufacturer: Thetford Marine Color: White Features of Thetford Marine Porta Potti 335 Marine Toilet w/Hold Down Kit 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 Package Contents: Thetford Marine Porta Potti 335 Marine Toilet w/Hold Down Kit Thetford Marine 92828: Potti 335 Marine Toilet w/Hold Down Kit Porta