Chimney, Residential Type and/or Building Heating Appliance Type (Type HT) Factory-Built
Chimney, Residential Type and/or Building Heating Appliance Type (Type HT) Factory-Built :
A residential type and building heating appliance chimney suitable for use at 1000oF (538oC), which complies with the optional 10-minute 2100oF temperature test of UL 103, Factory-Built Chimneys for Residential Type and Building Heating Appliance. Such chimneys are labeled as Type HT and are required for certain solid fuel-fired applications
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