NFPA 252

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Standard Methods of Fire Tests of Door Assemblies

This standard safeguards lives and property by outlining methods of fire testing door assemblies that testing laboratories and manufacturers can use to determine the degree of fire protection provided by such assemblies and assess their suitability when fire resistance of a specific duration is required.

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NFPA members and public sector officials may submit a question on an NFPA code or standard. Responses are provided by NFPA staff on an informal basis.
Happy Holidays! NFPA will be closed December 25 - January 1. We wish you all a safe & enjoyable holiday week and look forward to serving you in the new year.

NFPA 252: News & Research

News about NFPA codes and standards

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Happy Holidays! NFPA will be closed December 25 - January 1. Place your orders by Wednesday, December 13 to ensure domestic delivery by year end. We wish you all a safe & enjoyable holiday week and look forward to serving you in the new year.

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