Can anyone help me source a decent replacement air filter for my Lister TS2, which has a round flat air cleaner box a bit like a frying pan in shape. the old filter element is a strip of black foam between two metal mesh rings. size is 75mm high or 3 inch, 160mm outside diameter (6 .1/4 inch), and 110mm inside diameter (4.1/4 inch).
Suggestions please.