wall hung WC washdown Product Details Company Name Alfoldi Brand Name LINER Model Number 6638L1 Maximum Volume 3.8 litres Category WC Suites Product Description wall hung WC washdown Available In Hungary Efficiency Rating Chart Company name:Alfoldi Model:6638L1 3.8 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.