The Filbur 30-77820 is the correct compatible replacement for the following water filters:
The Filbur 30-77820 20 Micron Pool/Spa Water Filter is a replacement water filter cartridge used to purify the water in pools and spas. This 20 micron filter is very effective and features additional durability through its Plastisol constructed end caps. This Filbur Jumbo pool filter boasts a 20 micron rating and pleated polyester media. This pleated pool filter can be cleaned and re-used, and prevents surface blinding that can reduce water flow.
Filbur 30-77820 20 Micron Pool/Spa Water Filter specifications: