Damper - DS
Damper - DSB
Iris Damper
 
 
 
 
 
 
Bellmouth Spigot 
Back Draft Damper
 Butterfly Damper
 
 
 
 
 
Sector Damper Regulator
  Round Damper Regulator
 Damper Regulator
 
 
 
 
 
End Bearing
 Air Volume Damper