OLI EXPERT PLUS built-in toilet cistern for floor sanitary fixturesOLI EXPERT PLUS built in toilet cistern for floor sanitary fixtures The OLI EXPERT PLUS flush cistern is a toilet flush cistern specific for recessed installations under windows or inside low walls . Compatible with all floor mounted sanitary fixtures, installation in walls with reduced depth (masonry walls, plasterboard, light walls), mechanically operated double drain and possibility of installing the front or top control plate (it is supplied