TOTO leaves nothing to chance when it comes to design. They embrace holistic design principles because performance, quality, functionality and ultimately, customer satisfaction, are just as important as aesthetics. Backed by precision engineering and global manufacturing, TOTO's toilets, faucets, lavatories and showers simply perform and look better than the competition. With unrivaled vision and innovation expertise, TOTO leads and never follows. TOTO installations offer peace of mind and performance you can count on. Superior quality backed by over 90 years of experience creates many benefits. Reliability translates into reduced maintenance costs and superior performance ---------- Genuine TOTO adjustable universal fill valve. The adjustable height and flow rate will accommodate most TOTO toilets. ---------- Replaces valve numbers: TSU16A, TSU17A, TSU18A, TSU24A, TSU25A, TSU26A, TSU28A, TSU29A, TSU33A, TSU34A, TSU38A, TSU30A, TSU08A.5, TSU36A.10, TSU08A.6R, TSU36A.6, TSU06A.4, TSU09A.8R. ---------- The Fill Valve fits tank models: ST743S(R)(B), ST707S, ST804S, ST784S, ST753S, ST423S, ST424S, ST774S, ST794S, ST754S, ST423E, ST424E, ST743E(R)(B), ST794E, ST784E, ST454E, ST753E, ST754E, ST755S, ST703, ST706(R), ST723, ST733, ST406, ST405M, ST413M, ST412M, ST416M, ST464M. ---------- The Fill Valve fits combination models: CST853S, CST854S(L)(G), CST874S(G), CST934SF, CST853, CST854, CST863, CST864, CST863E, CST864E, CST634CEF(G), CST644CEF(G), CST854E(L), CST853E, CST604CEF(G)(R), CST614CEF(G), CST624CEF(G), CST626CEF(G), CST934EF, CST964CEF(G), CST974CEF(G), CST904, CST654MF. The THU500S flapper replaces the THU499S.