Concealed cistern, 4.5 litres single 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 S427067 Maximum Flow Rate 4.5 litres Maximum Volume 4.5 litres Category Cisterns Available In United Kingdom Efficiency Rating Chart Company name:Ideal Standard International NV Model:S427067 4.5 litres