Concealed cistern, 4/2.6litres dual flush with pneumatic operation and a delayed action bottom supply fill valve Product Details Company Name Ideal Standard International NV Brand Name Conceala Model Number S367667 Maximum Flow Rate 2.95 litres Maximum Volume 4/2.6 litres Category Cisterns Available In United Kingdom Efficiency Rating Chart Company name:Ideal Standard International NV Model:S367667 2.95 litres