Cartridges Showing all 3 results Default sorting Sort by popularity Sort by average rating Sort by newness Sort by price: low to high Sort by price: high to low TPI Large Capacity, High-Flow Filter Cartridges $100.00 Add to cart TPI Premium Filter Cartridges (9 ¾”) $100.00 Add to cart TPI Premium Filter Cartridges (9 5/8”, 19.5”, and 30 ¾”) $100.00 Add to cart