Toto ut104ev-01 commercial washout urinal w/back spud, cotton white this commercial compact wall mounted urinal with integral trap is ada compliant and features a 3/4" top spud inlet and 2" i.p.s. Outlet. High efficiency, 0.5 gpf. Outlet connection and mounting set. Toto continues to advance its leadership in eco-efficient fixtures and fittings with the introduction of four 0.5 gpf high efficiency urinals (heus). The heu's and 0.5 gpf ecopower flush valves are engineered to work together as a system to achieve the ultimate in water conservation and flushing performance. when ordering toto 0.5 gpf heus, toto 0.5 gpf ecopower flush valves are highly recommended for maximum performance.