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The Filbur FC-3920 is a compatible replacement for the following water filters:
The Filbur FC-3920 Watkins 33 Pool & Spa Filter is a compatible replacement water filter cartridge used to purify swimming pool and spa water. This Filbur pool filter prevents cartridge cracks and collapse through reinforced PVC center cores, which results in strength and durability. This compatible Watkins 33 filter features polyester media with sharp pleat folds for trapping waterborne particles.
This Filbur spa filter also includes antimicrobial end caps for fighting the odor-causing growth of mold and bacteria. In addition, the support bands of this pleated pool filter cartridge are wider in construction in order to promote the optimal flow of water and to prevent the chance of breaks.
Filbur FC-3920 Watkins 33 Pool & Spa Filter specifications: