The Thetford, model 1000, Porta Potti is ideal for RV, Marine, or Camper usage. It is in very good used condition. The unit is also in excellent working order. The unit is 100% self contained, no external water or power source necessary. Up to 50 fresh water flushes per water charge. There is a foot controlled flush unit. Gas-tight, odor-tight holding tank. Space saving design, light weight, portable holding tank for easy disposal. Durable maintenance free construction. Unit has been cleaned and sanitized. It is the ideal porta potti for your next extended hunting or fishing trip.