Concealed cistern, 6/4 litres dual flush with pneumatic operation and delayed action bottom supply fill valve Product Details Company Name Armitage Shanks Brand Name Conceala Model Number S355367 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:S355367 4.5 litres