A ceramic sanitary fixture, in particular a ceramic toilet bowl (1) made by casting in molds; being ceramic sanitary fixture of the type comprising at least: - a first lower component (2) comprising a liquid collection trough (3) and a siphon portion (4) for draining liquid; - a second upper component which is a rim (5) composed of a front portion (6) attached to the upper rim of the bucket (3) and a rear extension (7) comprising a channel (8) for the passage of liquid wherein the first component (2) and the rim (5) are made in one piece in the mold to form a unitary piece (2, 5), and wherein there is a third cover component (10) is an outer cover, wherein the unitary part (2, 5) can be housed, the latter being able to be associated and assembled with the cover (10) at least in the upper edges of the unitary piece (2, 5) ; characterized in that the front portion (6) of the rim (5) has a substantially toroidal shape and is divided into two sections joined together to form a continuous upper channel (16) for the passage of fluid, in use, and a surface ( 15) having a C-shaped profile turned towards the outside of the rim (5); the surface (15) extending in an undulating shape along the front portion (6) in such a way as to form open sections (16a) alternated with closed sections (16b) along the entire front portion (6) It is having a toroidal shape in order to allow fluid supplied through the channel (8) of the rear extension (7) alternately flow along the continuous upper channel (16) and be drained along the front portion ( 6) so that the rim (5) is of substantially closed type is obtained.
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