Impeller, Compatible with Brand Armstrong, Compatible with Grainger Part Number 52CE18, Compatible with Manufacturer Model Number 174035MF-113, 174035MF-143, Compatible with Series H-41, Compatible with Series Family S&H, Impeller Material Plastic, Overall Diameter 4.25 in, Compatible with Pump Type In-Line Circulating Pumps, Includes Gasket, Seal Kit, Manufacturers Warranty Length 1 yr