WC pan cistern seat and coverProduct Details Company Name Jika Brand Name Deep by JIKA Model Number H860618 Maximum Volume 3.75 litres Category WC Suites Available In Czech Republic France Efficiency Rating ChartCompany name:JikaModel:H860618 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.