Upgrade option from standard blocking plug
- Blocking plug to block any unused filter holes in the upper chamber of all 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
- Blocking plug comes with wingnut and 2 washers
- Not recommended for the Berkey Light system