Concealed cistern, 4/2.6litres dual flush with pneumatic operation and a delayed action bottom supply fill valve Product Details Company Name Armitage Shanks 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:Armitage Shanks Model:S367667 2.95 litres