Crawl Space Ventilation Calculator
Calculate crawl space ventilation requirements based on the 1:150 rule.
Required NFA
115.2 sq in
NFA Sqft
0.800
Vents Recommended
3
Calculate crawl space ventilation requirements based on the 1:150 rule.
Required NFA
115.2 sq in
NFA Sqft
0.800
Vents Recommended
3