305mm High, Back to Wall, 4.5litres single flush when used with the appropriate Conceala cistern Product Details Company Name Armitage Shanks Brand Name Contour 21 Schools Model Number S3046 Maximum Flow Rate 4.5 l/min Maximum Volume 4.5 litres Category WC Suites Available In United Kingdom Efficiency Rating Chart Company name:Armitage Shanks Model:S3046 4.5 l/min 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.