These grids fit the following DE Filter: Hayward Pro-Grid. FNS Plus (FNSP60) FNS (FNS60) Nautilus Plus (NSP60 Stainless Steel) Nautilus (NS60 Stainless Steel) Nautilus (NS60 Fiberglass).The item "Hayward Micro-Clear 60 Sq Ft DE Filter Grids 8 Grid Set" is in sale since Thursday, December 23, 2010. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Pools & Spas\Pool Equipment & Parts\Pool Filters". The seller is "positivepoolwholesale" and is located in FLORIDA,NEVADA,OHIO,ATLANTA GA. This item can be shipped to United States.