12
FIGURE 3.2d
34" MAXIMUM
FIGURE 3.2c
24" MAX | 29" MINIMUM |
| 59 1/2" |
| MINIMUM |
| PLUS |
30 1/2" | RISE* |
24" |
|
MINIMUM |
|
PLUS RISE* |
|
20 FT MAX 
24” MINIMUM
REGARDLESS OF
HORIZONTAL VENT LENGTH
FIGURE 3.2e
MAX. HORIZONTAL
RUN
12” MINIMUM
TO GRADE
* See "VENTING" section.