Wallhung WC, washoutProduct Details Company Name Jika Brand Name Dino Model Number H821374 Maximum Volume 3.75 litres Category WC Suites Available In Hungary Efficiency Rating ChartCompany name:JikaModel:H821374 3.75 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.