Manual duct damper

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AIR BALANCE Manual Opposed Blade Dampers. SLIP-IN Type. Quad Base Stand-off & Mount options. LARGE SELECTION 6” – 24” Wide Sizes. Young Regulator 820ALP. 5-Inch Galvanized Sheet Metal Round volume damper with manual quadrant adjustment handle · Ideal for use in branch duct lines for adjusting supply or return air Alan Mfg Variable Air Flow Motorized Damper. Power Open Power Close. Ceiling Diffuser, Register, Grille applications. Manual Wall or Occupany Sensor Control. Below you can see an example of a manual balancing damper. The benefit of this arrangement is that it closes down the duct closer to the source of theMBD-14 | iO HVAC Controls Manual Balancing Damper 14 Round with locking quad (NON-RETURNABLE) | iO HVAC Controls. Brand: iO HVAC Controls. SKU: MBD-14. 8-Inch Galvanized Sheet Metal Round volume damper with manual quadrant adjustment handle · Ideal for use in branch duct lines for adjusting supply or return air