ADA Elongated front (from 1.1 gpf/4.2 lpf to 1.6 gpf/6 lpf) toilet bowl, 1-1/2 in (38 mm) IPS. top spud, 10 in (254 mm) or 12 in (305 mm) Rough-in, fully glazed 2 in (51 mm) trapway, less flush valve, toilet seat and supply.