What standard is required by NFPA 211 for factory-built chimneys used with wood stoves?

The correct answer reflects the National Fire Protection Association (NFPA) requirements for factory-built chimneys used in conjunction with wood stoves. NFPA 211 outlines the standards for chimneys, fireplaces, and vents to ensure safety in their construction, installation, and maintenance.

UL 2013 HT pertains specifically to the safety standards for factory-built chimneys that are intended for use with solid fuel appliances, including wood stoves. This standard defines rigorous testing methodology for thermal performance and structural integrity, ensuring that the chimney system can safely vent byproducts of combustion without risking fire hazards or containing harmful gases.

The other options provided do not align with the specific requirements outlined in NFPA 211 for wood stoves. Each of them refers to different standards or types of appliances not applicable to the specific context of factory-built chimneys associated with wood stoves. Therefore, UL 2013 HT stands out as the correct standard for this scenario as it is designed to address the specific requirements necessary for safe operation.