The Filbur 09-77820 is a compatible replacement for the following pool and spa water filter cartridges:
The Filbur 09-77820 20 Micron Pool & Spa Filter is a replacement water filter cartridge used to purify pool and spa water. This Filbur pool filter boasts a 20 micron rating that reduces waterborne contaminants. This 20 micron filter features Plastisol end caps and pleated polyester filter media that makes it useful for demanding applications and environmental conditions. This Filbur spa filter measures 7 3/4 inches x 9 5/8 inches in size.
Filbur 09-77820 20 Micron Pool & Spa Filter specifications: