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The Filbur FC-1973 is a compatible replacement for the following pool and spa filters:
The Purex Pentair DM 180 Pool Filter Cartridge is a compatible swimming pool filter designed for in-ground swimming pools and spas. This pool filter features center cores constructed of punched PVC pipe for consistent water flow. A free flow core will extend the life of your filter, enhance filtration and give your pump optimum performance. This filter features genuine Reemay spunbound polyester media, with antimicrobial end caps and strong bands to support the pleats while extending the life of your pool or spa filter.
Purex Pentair DM 180 Pool Cartridge specifications:
Do not attempt to adjust, assemble or disassemble your DM 180 pool filter cartridge when there is pressurized air in your system. If the pump is started with any pressurized air in the system, this can cause the filter lid to be blown off which could result in serious property damage or personal injury. Before purchasing your pool filter cartridge, be sure to correctly measure your filter for an accurate fit. Here's how to measure your cartridge:
How to properly clean your spa filter cartridge: