TC50TT fits Raritan CH, CHB, CDD, CP, CPVD, PH and PHE; Wilcox Headmate Headmate (1460 C); Electra Headmate Headmate (1462 C); Skipper (1550 C); Winner (4042 C); Imperial (1593C);  Groco HC, HE and HF; Jabsco 37010-0000 Series,  the 59128-0000. 500EC fits Groco EB, K and House Size Bowl;  Jabsco 37010-1090 Series,  Raritan High Boy Bowl; and Royal Flush Bowl. Measures 17″ L x 14-1/2″ W, 5-1/2″ centers. Seat and lid locks in “up” position. All seats are white.