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 90 Degree Elbow 7716191084 Worcester Gas Flues and Accessories Worcester Pitched Roof Flashing 7716191091 Worcester Gas Flues and Accessories Worcester Filling Link 7716192281 Worcester Gas Flues and Accessories Worcester Long Telescopic Flue 7716191171