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Important Notice: NFPA’s Technical Questions Service is meant to provide information on and assistance in accessing and understanding NFPA codes and standards. Interpretations and opinions contained in responses provided in fulfilling this service do not constitute Formal Interpretations issued pursuant to NFPA Regulations. Any opinion expressed, therefore, is the personal opinion of the responder and does not necessarily represent the official position of the NFPA or its Technical Committees. In addition, responses provided are not intended, nor should they be relied upon, to provide professional consultation or services.