Hydra Duo With 90mic Self Cleaning Filter Included, Justadd A 10” Std Filter CartridgeA Hydra Duo Self Cleaning Filter with 1 BSP Brass inlet outlet with 90 micron stainless steel mesh filter moulded to an empty 10 standard housing. For a complete solution Just add a filter that suits your needs from our range of 10 standard filter cartridges. Flow rates will vary depending on which filter cartridge you select. Suitable for coarse sediment filtration on non potable rain water supplies, municipal water supplies, as a pre filter for