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Crawl spaces shall be provided with not less than one access opening that shall be not less than 18 inches by 24 inches (457 mm by 610 mm).
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1208.1 Interior Environment, Crawl Spaces
Crawl spaces shall be provided with not less than one access opening that shall be not less than 18 inches by 24 inches (457 mm by 610 mm) ...
1209.1 Interior Environment, Crawl Spaces
Crawl spaces shall be provided with not less than one access opening that shall be not less than 18 inches by 24 inches (457 mm by 610 mm) ...
2603.4.1.6 Plastic, Attics and Crawl Spaces
Within an attic or crawl space where entry is made only for service of utilities, foam plastic insulation shall be protected against ignition by 11/2 ...
2603.4.1.6 Plastic, Attics and Crawl Spaces
Within an attic or crawl space where entry is made only for service of utilities, foam plastic insulation shall be protected against ignition by 11/2 ...