Fireplace hearths; Fireplaces; Chimney flues; Chimney dampers; Fireplace inserts in the nature of burners; Gas burners for fireplace use; Ventilating fans for fireplaces and chimneys, and for use as mechanical drafting systems for fireplaces; Ventilating exhaust fans for fireplaces and chimneys, and for use as mechanical drafting systems for fireplaces

Metal chimneys; Metal chimney caps; Metal roof vents for chimneys and fireplaces in residential and commercial buildings