- Royal Berkey
- Imperial Berkey
- Crown Berkey
- Blocking plug to block any unused filter holes in the upper chamber of larger stainless steel Berkey systems.
- Fits all stainless steel Berkey systems including the Go Berkey, Travel Berkey, Big Berkey, Royal Berkey, Imperial Berkey, Crown Berkey, and British Berkefeld models.
- All stainless steel systems come standard with the proper amount of blocking plugs; in case of loss or damage, plugs may be purchased individually
- Each locking plug comes with a wingnut and 2 washers
- Not recommended for the Berkey Light system
- Sold as each