Universal 36 Sq. Ft. DE Filter Grid Set
Pleatco PFS1836 Universal 36 Sq. Ft. DE Filter Grid Set. Replaces Unicel FS-2003 or Filbur FC-9530Fibrillated fabric has 1008 (42x42) cross-over-points vs. inferior fabrics with 760 (38x20) cross-over-points for more consistent flow and fabric strength. Premium frame incorporates a center tube which creates a duct to funnel water from the outer most edges of the grid into the center and through the entire frame. High quality thread to prevent premature grid failure.