Model:CD-151 Parallel Blade, Control, AF Blade, Extr. Alum. up to 13" wg
The Model CD-151 (parallel blade) is an extruded aluminum rectangular control dampers that have hollow airfoil blades with a .375" thick end nose and a .081" frame. One section can be built up to 60"w x 72"h, if a larger size is required there will be an automatic multi-section charge for jackshafting.