2 of these support blocks are available- the price for one block.
Geberit Housing Protector for Geberit Omega Concealed cistern 243.092.00.1 - New
Geberit Omega Surface Even Cistern Cover Plate Customer Specific 115.087.00.1
Geberit Recessed Cistern Support Block Geberit Sigma 8 cm (243.344.00.1)
Geberit Duofix Wall Hung WC Toilet Frame with 120mm OMEGA Cistern Blue
Empyreal Dual Flush Button Replacement Parts for Toilet Cistern, Compatible with Geberit Impuls 250 Flush Valve, WC Tank Pusher Switch & Adjustable Fixed Support, 1 Piece.
Geberit Sigma 50 Push Plate Glossy Black/Aluminium for Sigma Cisterns 8 cm (UP720) and 12 cm (UP320)