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The Filbur FC-9920 is a compatible replacement for the following spin filters:
The FC-9920 Spin Filter Round Grid Pool & Spa Filter is a compatible replacement circular spin grid with a 17 inch x 2.5 inch hub. This Filbur circular spin grid is ideal for Diatomaceous Earth filter applications. This D.E. filter grid has a reinforced center core and seams that are stitched with chemical resistant strings.
FC-9920 Spin Filter Round Grid Pool & Spa Filter specifications: