Satellite Pro 12 In-Unit Portable SinkPossibly the most flexible of the in unit hand washing stations on the market, the Pro 12 provides ample reservoir space as well as the ability to place it in Vantage and Axxis portable restrooms without removing the urinal. Features Include For non potable water only 12 gallon fresh water capacity Foot pump operation Gray water drains directly into the portable restroom waste tank Molded in spigot makes for a vandal discouraging design 1. 8 gallon