For inserting toilet cleaning tablets into Uni and Base cisterns; in combination with TECEsquare II metal, TECEsquare II glass and TECEsolid flush plates; for installation from the front; suitable for flush-mounted installation. Use in brick-wall construction from 32 mm wall structure. Maximum brick-wall construction thickness: Dry-wall construction 89 mm, brick-wall construction 108 mm Attention: The cleaning tablets used must not contain chlorine or any other oxidizing substances.