Unicel FS-2004 48 Sq Ft DE Filter Grid Set Val-Pak GLB Swamp to Swim is

GLB Swamp to Swim is engineered specifically for these situations

Plumbing and equipment

This makes the air relief assembly a critical safety component—not just a convenience feature

you’re buying from a pool supply company that understands recovery situations — not just maintenance chemistry

chemical-resistant materials designed to withstand continuous water pressure

Unicel FS-2004 48 Sq Ft DE Filter Grid Set Val-Pak GLB Swamp to Swim isKey Fit & Function Complete DE Grid Set Replacement Designed to replace all internal DE grids in 48 square foot DE pool filters. Fits Pentair FNS Plus 48 Exact 48 Sq Ft Fit Proper sizing ensures correct D. E. coating, balanced pressure, and full filtration surface area High Efficiency Filtration Media Constructed with Reemay polyester fabric to capture fine debris down to D. E. filtration standards Restores Proper Flow & Pressure Replacing worn or