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![Pleatco Pool Grid DE, SET, 11" x 18" for 36 sq ft, (7 Full + 1 Half) [PFS1836] Spa Filters: Replacement Cartridges - Filbur 8" Outside Diameter Cartridge PFS1836](http://bathparts.com/cdn/shop/files/PFS1836.jpg?v=1772742171&width=1600)
![Pleatco Pool Grid DE, SET, 11" x 18" for 36 sq ft, (7 Full + 1 Half) [PFS1836] Spa Filters: Replacement Cartridges - Filbur 8" Outside Diameter Cartridge Grid_DE_SET_Pleatco_11_x_18_for_36sqft_7_Full_1_Half_PFS1836](http://bathparts.com/cdn/shop/files/Grid_DE_SET_Pleatco_11_x_18_for_36sqft_7_Full_1_Half_PFS1836.jpg?v=1772742171&width=1600)
![Pleatco Pool Grid DE, SET, 11" x 18" for 36 sq ft, (7 Full + 1 Half) [PFS1836] Spa Filters: Replacement Cartridges - Filbur 8" Outside Diameter Cartridge Grid_DE_SET_Pleatco_11_x_18_for_36sqft_7_Full_1_Half_PFS1836_OUTSIDE](http://bathparts.com/cdn/shop/files/Grid_DE_SET_Pleatco_11_x_18_for_36sqft_7_Full_1_Half_PFS1836_OUTSIDE.jpg?v=1772742171&width=1600)
![Pleatco Pool Grid DE, SET, 11" x 18" for 36 sq ft, (7 Full + 1 Half) [PFS1836] Spa Filters: Replacement Cartridges - Filbur 8" Outside Diameter Cartridge PFS1836](http://bathparts.com/cdn/shop/files/PFS1836_1024x.jpg?v=1772742171)
![Pleatco Pool Grid DE, SET, 11" x 18" for 36 sq ft, (7 Full + 1 Half) [PFS1836] Spa Filters: Replacement Cartridges - Filbur 8" Outside Diameter Cartridge Grid_DE_SET_Pleatco_11_x_18_for_36sqft_7_Full_1_Half_PFS1836](http://bathparts.com/cdn/shop/files/Grid_DE_SET_Pleatco_11_x_18_for_36sqft_7_Full_1_Half_PFS1836_1024x.jpg?v=1772742171)
![Pleatco Pool Grid DE, SET, 11" x 18" for 36 sq ft, (7 Full + 1 Half) [PFS1836] Spa Filters: Replacement Cartridges - Filbur 8" Outside Diameter Cartridge Grid_DE_SET_Pleatco_11_x_18_for_36sqft_7_Full_1_Half_PFS1836_OUTSIDE](http://bathparts.com/cdn/shop/files/Grid_DE_SET_Pleatco_11_x_18_for_36sqft_7_Full_1_Half_PFS1836_OUTSIDE_1024x.jpg?v=1772742171)