Home / Products / Boilers / Gas Boilers / Worcester Gas Boilers / Worcester Gas Flues and Accessories / Worcester Greenstar 28mm System Filter 7733600237 Worcester Greenstar 28mm System Filter 7733600237 Category: Worcester Gas Flues and Accessories Description Additional information Description Worcester Greenstar 28mm system filter Additional information Name Worcester Greenstar 28mm system filter Product Code 7733600237 Related products Worcester Gas Flues and Accessories Worcester Greenstar 22mm System Filter 7733600236 Worcester Gas Flues and Accessories Worcester Pitched Roof Flashing 7716191091 Worcester Gas Flues and Accessories Worcester Flue Kit FS High Flow 7716191155 Worcester Gas Flues and Accessories Worcester Flue Bracket 100mm 7716191177