58
3” (76 mm)
12” (305 mm)
Pipe hangar
Ventilated Combustion Air
intake termination in crawl
space
Ventilated Combustion
Air intake pipe
CRAWL SPACE
ATTIC
highest level of insulation
A10497
Fig. 50 -- Vent Terminations for Ventilated Combustion Air
986TA
