REPLACEMENT FOR - The Hurricane HF4H949-01 Advanced Cartridge Filter is compatible for Unicel: 4CH-949, Pleatco: PWW50L, Filbur: FC-0172, Waterway Teleweir 50 and other compatible models. Original manufacturer's names and part numbers are for reference only. DIMENSIONS - We manufacture to tighter tolerances than other pool filter brands. This product measures: Length 13.1875 inches, outer diameter 5 inches, Top handle, Bottom hole 1.5 Female SAE Threaded. Measure your current filter's dimensions if you're unsure of product fit.