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