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Designed to fit our 1 US gallon (3.8 litre) clear glass jug, available here.

It has a hole in the middle to accomodate a three piece airlock or bubbler airlock.

This reusable plastic 38mm screw cap fits our 1 US gallon (3.8 litre) clear glass jugs.


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  • Free delivery over £50
    or £4.99 standard*
  • Delivery next working day
    if ordered by 4pm
  • Reinforced bottle
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*Great Britain Mainland only. £5.00 surcharge applies to Highlands, Northern Ireland, Jersey and Guernsey. For more detailed information, please click here.