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Mechanical code regulated chimneys and vents

Includes factory-built chimneys, chimney liners, vents, connectors and related products.

Automatic dampers Products certified to UL 17 Information Manufacturers

Chimneys

Factory built chimneys

Chimneys, 1400 degree Fahrenheit (UL2561) Information Manufacturers

Chimneys, residential type and building-heating appliance (UL 103) Information Manufacturers

Chimneys, Medium-heat appliance (UL 959) Information Manufacturers

Chimney and vent connectors and accessories (UL 103, UL 441, UL 641, and UL 1777) Information Manufacturers

Chimney liners (UL 1777) Information Manufacturers

Vents

Type B and BW venting systems (UL 441)  Information Manufacturers

Type L low-temperature venting systems (UL 641) Information Manufacturers

Special gas vents for Categories II, III, and IV (UL 1738)  Information Manufacturers  

Gas vent caps and accessories Information Manufacturers