The RONDA-BIS toilet seat is made of antibacterial duroplastic material, which is hard and resistant to scratches. RONDA-BIS closely resembles the more affordable version made of polypropylene. This product has been designed with an innovative design where the seat cover partially overlaps the seating, creating a cascading surface. The dimensions of the seat are highly versatile, allowing our product to fit many types of sanitary ceramics, including compact, wall-hung, and freestanding models.


The toilet seat features a metal hinge with a slow-closing (soft-close) mechanism and a quick-release function (quick release) facilitated by a central button. The hinges have an elastomer pad on the underside to prevent the seat from sliding on the porcelain. Both the seat cover and the seating itself have elastomer bumpers, providing additional stability on the ceramic surface. The attachment of the seat is done from the top of the ceramic using metal screws that are screwed into an expansion plug located in the porcelain hole.

Min. Spacing of hinges: 68 mm

Max. Spacing of hinges: 178 mm

Additional information

Weight 2130 g
Dimensions 437 × 362 × 52 mm



quick release, soft close


grey, black, white





Materiał odbojników


Materiał zawiasów



top mounted


Wash the toilet seat with soap and water. Do not use detergents containing solvents or abrasives. Do not use sponges with an abrasive surface. To remove dirt, use a mild, general-purpose washing liquid.


Sanit-Plast gives a 2-year warranty on all toilet seats. In case of material or manufacturing defect that will appear in the toilet seat within 2 years from the date of purchase with normal use, Sanit-Plast will repair or replace the defective toilet seat for a new product suitable for use. The product warranty is valid upon presentation of proof of purchase of the toilet seat.
The product should be used as intended.
Complaints are not subject to defects and damage resulting from improper transport, storage, assembly and use.