Concealed cisterns for back-to-wallWCs A back-to-wall WC requires a concealed cistern only as the WC does not require any additional support when installed on the floor. Basic Tank LH concealed cistern with The Gap back-to-wall WC Standard/compact Under-window Bathroom Solution Bathroom Solution Basic Tank Compact Basic Tank LH Basic Tank L 890080200 890121201 890121200 For standard and compact bathroom spaces 910-980mm high - adjustable inlet pipe820mm high - fixed inlet pipe See page 20 See page 20 See page 21 15