The exit has been changed so that the fine particles are trapped in a more efficient manner and are a lot easier to clean and purge to waste.The resulting clarity is incredible! The improvement adds a full height metal plate (instead of the half plate) and a plastic weir after it.This new design utilises the whole pack of static K1.This maximises the cleaning potential and gives great results. Equally as exciting is the air backwash kit which is part of this improvement. No more sponge to rinse off. Just as easy to clean as the EAZY! Simply turn on the air valve and the cleaning process begings without getting your hands wet.