Pump Motor Compatible with Brand Armstrong Compatible with Manufacturer Model Number S-45 Compatible with Pump Type In-Line Circulating Pumps Compatible with Series S H 4 Series Compatible with Series Family S-45 Horsepower 1/4 Maximum Ambient Temperature 104 Degrees F Maximum RPM 1 800 RPM Minimum Ambient Temperature 32 Degrees F Motor Enclosure Design Open Drip-Proof Motor Thermal Protection Auto Nameplate Voltage 120V AC Number of Speeds 1 Phase Single Body Diameter 5 5/8 in