Full Set of 18 in. Grids Top Manifold Filter FS-2003 FC-9530
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Top Manifold 36 sq. ft. Full Set of 18 in. Grids FS-2003 FC-9530 The set contains 8 grids: 7—–Top Manifold 36 sq. ft. Filter 18 in. Large Grids (11" wide) 1—–Top Manifold 36 sq. ft. Filter 18 in. Partial Grid (9-3/4" wide) Note: Collar has open slot (2 notches)