The Unicel C-8499 R is a pool and spa water filter cartridge that is the correct compatible replacement for the following filters:
The Unicel C-8499 Comp. Astral Terra 100 Replacement has an outer diameter of 8 15/16 inches, with a length of 19 1/4 inches. This Unicel pool filter has an open top and bottom with both having diameters of 3 3/4 inches. This Unicel C-8499 filter contains 100 square feet of filter media.