Atlas Low level S trap pan Product Details Company Name Lecico Plc Brand Name Atlas Model Number UNWHSLLPA, ASWHLLBCI Maximum Flow Rate 4.5 litres Maximum Volume 6/4 litres Category WC Suites Available In United Kingdom Efficiency Rating Chart Company name:Lecico Plc Model:UNWHSLLPA, ASWHLLBCI 4.5 litres 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.