W3 Filter for 315mm Air Filter Box

The W3 Filter is for the Air Filter Box which is part of our SpiraSafe range; a well-proven system of fittings with factory-installed EPDM rubber gaskets.  The double gasket ensures tight and permanent connections between system components which are air tight and do not require the use of mastic or sealant.  

- Saves time - quick and easy installation
- Air tight - no risk of leakage due to the SpiraSafe class D rated double rubber seal
- Neat - ideal for exposed areas, as no need to use sealants