Rimless WC HO Close Coupled Suite (water savin applies with AV2661WH/BE) Product Details Company Name Twyford Bathrooms Brand Name Sola School Rimless 350 Model Number SA1514WH Maximum Flow Rate 4.5 l/min Maximum Volume 6/4 litres Category WC Suites Available In United Kingdom Efficiency Rating Chart Company name:Twyford Bathrooms Model:SA1514WH 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.