– Filter Insert Please note. This item can be reused at your next filter change. Do not throw out. Model # 854100
The new Billi filters now replaces many of the older Billi swing change twin filters sets so a single filter and the by-pass insert is all that is required.
The reusable filter by-pass insert 854100 is used in the right hand side to replace the second stage on the following systems, Quadra and the Quadra Plus.