VCD - Volume Control Damper (Quadrant Arm)
VCD - Volume Control Damper (Quadrant Arm)
MVCD - Motorized Volume Control Damper
MVCD - Motorized Volume Control Damper
VCD - Volume Control Damper (Worm Gear)
VCD - Volume Control Damper (Worm Gear)
RVCD - Round Volume Control Damper
RVCD - Round Volume Control Damper
NRD - Non Return Damper
NRD - Non Return Damper
PRD - Pressure Relief Damper
PRD - Pressure Relief Damper
PRF - Pressure Relief Flap
PRF - Pressure Relief Flap
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