Manufacturer Name: Honeywell Product Number: MP918B1006 OEM Part Number: MP918B1006 Product Description: Actuator,3-13 Psi,3-1/2" Strke Weight:10.53lbs/4776.32g The Honeywell MP918B1006 actuator is a pneumatic workhorse that precisely controls airflow in your HVAC system. Its piston extends and retracts with a 3-1/2-inch stroke, smoothly opening and closing valves or dampers, w... https://www.partshnc.com/actuator3-13-psi3-12-strke-2