Aprilaire 10" Round Ventilation Damper (Normally Closed/Power Open)

Aprilaire round dampers come in all the sizes you need and work well with either rigid metal or flex duct. Adjustable blade positioning and an integrated foam seal provide flexibility for any type of zone job. Specifications Power open/spring close operation Two Wire Installation 24Vac, 6W, 19Va 60Hz Synchronous Type Motor Impedance protected for continuous stall Adjustable stop (in open position)