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For securing the flange in place 4 needed per unit ..

This fits the Euro 5 Still Manufactured in NZ ..

This is used in the top of the Tower of the Euro 30 and Euro 60 Thermometer and Condenser fit into this   ..

To hold packing in place in Euro 30/60 Tower ..

Used in the Euro 5 Tower and the Vertaflow filter systems Manufactured in Dunedin NZ ..