NAICS Code: 922160 Fire Protection NAICS Associati..

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NAICS Code: 922160 Fire Protection NAICS Association | #instalações prediais de prevenção e combate a incêndio

NAICS Code: 922160 Fire Protection NAICS Association

NAICS Code: 922160 Fire Protection NAICS Association

UL 555 mandates damper samples test at airflow conditions which are at least four hundred fpm and zero.5 in.

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