• Weight: 3 oz. 

• Width: 6 1/4" 

• Length: 8" 

• Area: 10 sq. ft. 

• Top Style: 2 3/8" Open 

• Bottom Style: 2 3/8" Open 

The Unicel C-6610 R Compatible Pool & Spa Replacement Filter Cartridge is a spa or swimming pool filter cartridge for the Muskin 10 square foot. The Filbur FC-3820 is a compatible replacement filter. The FC-3820 spa filters are polyester-pleated cartridges that feature an open PVC-enforced core measuring 2 3/8 inches in diameter. Spa and swimming pool filters improve water clarity and health by removing harmful bacteria and other microorganisms. The FC-3820 spa filter cartridges are able to replace the following manufacturer part numbers: Muskin A3810 and FE-90, Unicel C-6610, Pleatco PMS10, and Aladdin 11001.