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Aprilaire 6737 specifications:
The Aprilaire 6737 Rectangular Vent Damper - 10" x 20" is ideal for use in residential applications. This rectangular duct damper features an exclusive Flexible Link design and installs in 4.24" slots within the duct. This Aprilaire damper features an adjustable stop and 60hz synchronous type motor. In addition, this motorized damper offers two wire installation and is impedance protected for continuous stall.