Pentair 195060 Complete Grid Assembly Replacement Nautilus 72 Pool and Spa D.E. Filter Complete grid assembly replacement Fits Pentair D.E. Nautilus, Nautilus Plus pool and spa filters models NS, NSP 72 Nautilus filters replacement parts consists full and partial grid, manifold grid, manifold retainer rod Also consists retainer washer, grid and bleeder screw Measures 18-inch length by 42-inch height by 18-inch width