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II- The Flex-Flex adapter is used to connect two flexible liners together. Its
upper side is a single wall with 4 screw holes and its lower side has two walls
whose outer wall also has 4 screw holes (Figure 14). It is installed between
two flexible liners, usually halfway through the chimney.
Figure 14 -DuraSeal FLEX-FLEX adapter
Ill- The female adapter is used to connect the flexible length to a rigid duct.
Its upper side reversed edge, and the lower side has two side walls, which
the outer wall has screw holes (Figure 15). It is installed on the top of the
flexible length.
Figure 1 S - DuraSeal Female adapter
I. Assembly steps for the Flex-Flex adapter with the flexible liner
1. Before official installation
1.1. If cutting the liner on the field is required, make sure the cut
is square. Make a marker line on both ends of the liner at 1 5/8"
from each end. That mark will act as a reference point when the
adapters are fully seated onto the flex liner. (Figure 16).
1.2. To make sure that everything is airtight before putting the
sealant between both tubes, do a dry fit test by pushing the
liner into the adapter until it reaches the bottom of
the flare between the inner wall and the outer wall, then
remove it (Figure 17).
Marker
Line
Figure 16 - DuraSeal Flex marker line
Figure 17 - DuraSeal Flex dry fit test
15
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