floorstanding WC, washout, horizontal outletProduct Details Company Name Jika Brand Name Roman Model Number H821156 Maximum Volume 9 litres Category WC Suites Available In Hungary Netherlands Efficiency Rating ChartCompany name:JikaModel:H821156 9 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.