For inserting toilet cleaning tablets for Uni and Base cisterns; in combination with all TECE flush plates or TECElux flush glass plates; for installation from the front; suitable for flush-mounted installation; retrofitting possible with all TECE flush plates. In brick-wall construction, to be used as of 16 mm wall thickness. Maximum brick-wall construction thickness: 60 mm dry-wall construction, 75 mm brick-wall construction. Caution: The cleaning tablets used must not contain chlorine or any other oxidizing substances.