Specifications

67
handle on the outside of a duct. Depicted below in Figure 25 is an example of
what manual balancing damper looks like.
18
"
18"
Figure 25 Manual balancing damper (Reprinting Permission Requested
from Gran-Stratman Industries Inc.)
Figure 26 pictured below shows a volume control damper also known as an
automated zone damper. Notice these differences in operations from these two
dampers.
18"
18"
12"
24"
Figure 26 Volume control damper (Reprinting Permission Requested from
Gran-Stratman Industries Inc.)