The CENTREX 1000 NE model is ideal for those installations where electricity is not available. The 1000 NE series is designed only for use with 1 pint flush toilets (purchased separately). Capacity Listed capacities refer to the amount of people, on average, using the unit per day. Seasonal/Vacation: 4 adults or families of 6 Electrical Specifications The 1000 NE does not have a built-in heating element or fan, only an optional 12 volt fan. Vent Pipes and Drains All Sun-Mar products must be properly vented per the guidelines present in the unit’s owner’s manual and the 1000 NE is no different. Vent Pipe 4″ Thin-wall PVCDrains 1” OD Safety drains are recommended in all applications. Weight and Dimensions Measurements given in pounds (lbs) and inches. Height: 27 1/2″Width: 24 1/2″Length: 32 1/2″Weight: 42 lbsShipping weight: 78 lbsShipping carton dimensions: 36″ by 27″ by 36″