• Weight: 4 oz. 

• Width: 8.875" 

• Length: 39" 

• Area: 175 sq. ft. 

• Top Style: 4" Open 

• Bottom Style: 4" Open 

The Filbur FC-1973 is a replacement swimming pool filter cartridge for the Purex/Pentair DM 180. The FC-1973 pool or spa filters are made of tightly-packed polyester pleats that cover a water filtration surface area of 175 square feet per cartridge. Swimming pool filters work in conjunction with proper water chemistry to promote a safe and healthy swimming environment for your pool or spa. The FC-1973 pool filters are able to replace the following manufacturer part numbers: Pentair/Purex R173582, Unicel C-8405, and Aladdin 28001.