Manufacturer Name: Armstrong Fluid Technology Product Number: 816305-328K OEM Part Number: 816305-328K Product Description: Impeller Kit For S-45 (Nfi) Weight:0.47lbs/213.19g The Armstrong Fluid Technology 816305-328K is a 3.88-inch impeller kit designed for S-45 pumps, commonly used in HVAC systems. It's a crucial component responsible for transferring energy from the motor to... https://www.partshnc.com/816305-328k-armstrong-fluid-technology-impeller-kit-for-s-45-nfi