Not sure if it fits your kettle?.
4x Durable Kettle Mesh Filter Set Russell Hobbs 21400 Anti Limescale
4x Russell Hobbs 21400 Kettle Mesh Filters Anti Scale Replacement Set
4x Replacement Anti-Scale Kettle Filter – Philips HD4670 HD4672
4x Anti-Scale Mesh Inserts for Philips Kettles – HD4669/20, HD4671/60
4x Anti Scale Mesh Filters for RUSSELL HOBBS Kettles 20070 20071 20444
3x Russell Hobbs 21400 Kettle Mesh Filter Set Anti Scale Replacement
