Fire & Smoke
D a m per s

Curtain Fire Damper
NFC FD 4000 Series

Models:
NFC FD 4000 A:
NFC FD 4000 B:
NFC FD 4000 C:
Blades inside air Stream
Blades Partially inside air Stream
Blades completely out of air
Stream

VolumeControl
D a m p e r s

NAFFCO high quality Volume Control Dampers are designed for quiet,
efficient and reliable air volume control in HVAC systems. These dampers
allow even distribution and control of airflow under conditions of high duct
pressures.

Fire & Smoke
D a m per s

The sand trap louver is used at the fresh air inlet side. It lowers the
dust loading of conventional filtration as it is designed to
separate large size sand particles at low to medium speeds
The STL is designed to separate large particles at low air
velocities, thus avoiding excessive dust loading of conventional
filters. It’s not intended as a substitute for conventional supply air
filtration plant