The Sun-Mar Mobile 12V is designed for boats and RVs. It incorporates a 12V fan assembly and a 110 V heater that helps evaporate liquid. The mobile is marinized to accommodate violent motion, with mounting brackets, a finishing drawer that is gasketed in, a a finishing drawer that is gasketed in, and a fold up footrest which can be easily removed to access the finishing drawer. With a width of only 19.5-in and depth of 23-in this medium capacity electric composting toilet occupies only slightly more floor space than a toilet seat. All Sun-Mar® composting toilets incorporate a patented Bio-drum™ which ensures fast and odorless decomposition. Saves thousands of gallons of water, while recycling waste into safe usable soil. The mobile includes an air filtration kit for odor-free deck level venting on boats. Its seasonal capacity is 3 adults or a family of 4. Residential use: 1 adult.