The SPACESAVER is a standard three chamber unit designed specifically for situations where space is extremely limited. With a width of only 19 in and depth of 22 in , even a closet or small corner can now be turned into a bathroom! The SPACESAVER is fitted with the same kind of high quality turbo-fan as other electric units have. The SPACESAVER has almost the same size Bio-drum as the COMPACT, so composting capacity is similar to that of the Compact. On the other hand, evaporation is limited by the smaller heater and evaporating surface, so the safety drains should be connected.