DuraVent DirectVent Pro Installation Instructions Manual page 7

Step 6. Push the flex pipe back up into the
ceiling support box, center the Retro
Connector, and attach it to the support box,
or decorative sleeve for double wall solid
packed pipe, with the Sheet Metal Screws
furnished. The holes in the Retro Connector
are pre-punched. (Figure 5.)
Existing Ceiling
Support Box
Drill (4)
1/8-inch
diameter holes
(3) Sheet Metal
Screws
Figure 5
Termination
Cap
Sheet Metal
Screws
Figure 4
(3) Sheet Metal
Screws
7