Nuvola Wall Hung single flush 3 litres when used with the appropriate OLI74 cistern Product Details Company Name Azzurra Sanitari in Ceramica S.P.A Brand Name AZZURRA Model Number nuv 100/sosk Maximum Volume 3 litres Category WC Suites Available In Italy Efficiency Rating Chart Company name:Azzurra Sanitari in Ceramica S.P.A Model:nuv 100/sosk 3 litres www.uwla.eu The average flushing volume for dual flush WC Suites and Cisterns is calculated as (a + (3 × b)) ÷ 4, where a is the full flush value and b is the low flush value.