Sandringham 21 close coupled WC bowl – horizontal outlet Product Details Company Name Armitage Shanks Brand Name Sandringham 21 Model Number E896301 Maximum Volume 3 litres Category WC Suites Available In Ireland United Kingdom Efficiency Rating Chart Company name:Armitage Shanks Model:E896301 3 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.