These small plugs will only fit Berkey Light filters that were made in 2013 or earlier. Pack of 4.
Note: This product can not be shipped to Iowa or California because of certification regulations.
To make sure you get the correct plugs, please check the manufacturing
date on your Berkey (found on the bottom of the upper chamber). If the
two-digit number in the circle is 13 or lower, this means your filter
was made in 2013 earlier and these plugs will fit.
If it says 14 or higher, you'll need the larger plugs #100006048.