Empire Comfort Systems DVX36FP33CL Installation Instructions And Owner's Manual page 34

VENTING FRAMING AND FINISHING (continued)
EXISTING CEILING JOISTS
CEILING BELOW
Vent Size
6 5/8"
8"
A
Vent Size
6 5/8"
8"
Page 34
NEW FRAMING
A
B
A B
10" 10"
10 1/2" 10 1/2"
Figure 52
B
NAILS, 4 REQUIRED
CEILING FIRESTOP
A B
10" 10"
10 1/2" 10 1/2"
Figure 53
NAILS, 4 REQUIRED
Vent Size
6 5/8"
8"
See Horizontal Termination Page 35 and Vertical Termination
Pages 36 and 37.
CEILING FIRESTOP
A
B
A B
10" 10"
10 1/2" 10 1/2"
Figure 54
23114-0-0407