92856 - Porta Potti 550P Msd, Piston Pump
Thetford Porta Potti 550 Msd
Refreshed, modern appearance. Cleaner seat and cover design. More ergonomic carrying handle. Lid latch. Redesigned valve handle, fill cap and pump. 4 gallon fresh water tank. 5.5 gallon waste water tank. Average flushes: 56. Piston pump flush and MSD.