The APCFGR34 diatomaceous earth pool filter replacement grids feature a reinforced center core for increased durability. All of the APC DE grids use a 100% polypropylene cloth with an excellent resistance to acids, alkalis, mildew and rot. This cloth is stitched with a chemical resistant string that is then sonic welded to prevent any tearing or fraying.
- Measurements: 37 5/16 x 10.75 inches
- 72 square feet
- Collar has a single notch and is covered with an adapter