Heatilator HEIR36H-IFT Installation Manual page 13

Non-Combustible Zone
2 X 4 OR GREATER
FRAMING MATERIAL
1/2 IN. BUILDING MATERIAL
PIPE IS FOR VISUAL
(MAY BE COMBUSTIBLE)
REFERENCE ONLY
NO COMBUSTIBLES
IN HATCHED AREA
2 X 4 ONLY IN
GRAY AREA
NOTE:
2 X 4 HEADER
CONFIGURATION
39 IN.
1 IN.
FACTORY-SUPPLIED
1/2 IN.
NON-COMBUSTIBLE
BOARD
= COMBUSTIBLES
NOT ALLOWED
Figure 3.7 Non-Combustible Zone
Heatilator • HEIR36-IFT, HEIR42-IFT, HEIR50-IFT Installation Manual • 2458-980 Rev. B • 8/17 13