Combi Pack: wall hung WC Product Details Company Name Alfoldi Brand Name MELINA Model Number 5522H1 Maximum Volume 3.8 litres Category WC Suites Product Description Combi Pack: wall hung WC Available In Hungary Efficiency Rating Chart Company name:Alfoldi Model:5522H1 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.