March 2000
Page 22
GB 40 I - FIREPLACE INSERT
TERMINA
TIONS
VENTING:
TERMINATIONS WITH HORIZONTAL SECTIONS
NOTE: Insert MUST be installed into an existing masonry fireplace or a zero clearance
fireplace kit (see page 29 for part number).
The horizontal section must not exceed 50% of the vertical rise. Provide a ¼” rise for each 12” horizontal
run.
NOTE: Recommended maximum vertical not to
exceed 35 feet.
Recommended maximum offsets:
two (2) 90 degree elbows, or four (4)
offsets equaling two (2) 90 degree
elbows.