The Filbur FC-9940 is a compatible replacement for the following spin filters:
The FC-9940 Spin Filter Round Grid Pool & Spa Filter is a compatible replacement circular spin grid with a 14.5 inch x 2.5 inch hub. This Filbur circular spin grid is perfect for applications requiring a Diatomaceous Earth filter. The center core of this Filbur D.E. filter grid is reinforced added strength and durability, and seams that are stitched with strings resistant to chemicals and fraying.
FC-9940 Spin Filter Round Grid Pool & Spa Filter specifications: