Concealed cistern, 6/4 litres dual flush with pneumatic operation and a conventional top supply fill valve Product Details Company Name Armitage Shanks Brand Name Conceala Model Number S362467 Maximum Flow Rate 4.5 litres Maximum Volume 6/4 litres Category Cisterns Available In United Kingdom Efficiency Rating Chart Company name:Armitage Shanks Model:S362467 4.5 litres