4" Cap with hole drilled for bung or airlock
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This 4 inch screw on cap is the replacement to fit on a Wide Neck Wine Fermenter, with a 4" diameter thread.
This cap does not come with a valve. Instead, it has an 28mm diameter hole, designed for a rubber bung. Fit a bored bung and airlock when fermenting or use a solid bung for short term storage. If you are looking to store a beer or wine in your wide neck fermenter, then we recommend using the 4" Plain Cap for Wide Neck Fermenter.
Pic of wide neck fermenter for illustration purposes only and it is not included with the purchase of this cap. This is for the cap only.