Honeywell Low Force Damper Actuator w/ Spring Return for Unit Ventilators (5 to 12 psi)

Used to control the damper on unit ventilators. Can be adapted to various unit ventilator control cycles. Replacement devices are available for Johnson, Powers, Robertshaw, Barber-Colman, and older Honeywell unit ventilator damper actuators. Features Constructed of strong zinc die castings. Hesitation feature available for unit ventilator cycles requiring a minimum percentage of outdoor air. Specifications Stroke: 2-1/8" to 2-1/2" Diaphragm Effective Area (sq in.): 11" Maximum Safe Operating Pressure (psi): 25 PSI