12
3.3
SPECIAL VENT INSTALLATIONS
3.3.1 PERISCOPE TERMINATION
EN
Use the periscope kit to locate the air termination above grade. The periscope must be installed so that
when fi nal grading is completed, the bottom air slot is located a minimum 12" (304.8mm) above grade.
The maximum allowable vent length is 10' (3.1m).
W415-1443 / C / 06.06.16
30" (762MM)
MINIMUM
33 1/8"
(841MM)
12" (305MM)
MINIMUM
TO GRADE