The one-piece, wall-hung Sanistar macerating toilet system from Saniflo combines a macerating pump and an electronically activated flushing mechanism. Measuring 18” wide and 20.5” deep, and with no external water tank, the self-contained wall-hung unit is ideal for tight spaces where installation space is at a premium, Saniflo says. The system saves water by using only 1.1 gpf, instead of using the standard 1.6 gpf. It can also pump water away from a nearby hand basin. A 1” copper or plastic discharge pipe pumps effluent 9’ vertically and/or 100’ horizontally.