EXHAUST FLUE CAP AND FILTER DEVICE FOR A GAS FIRED APPLIANCE

摘要

An exhaust flue cap and filter device (10) for a gas fired appliance in communication with an exhaust flue opening having an outer pipe (13) and a coaxial liner (14). The device includes a tubular cap (16) with an open lower end (18), an opposed open upper end (20), and a plurality of ventilation holes (22) wherein the cap is receivable over the flue opening. A removable top (24) is attached to and closes the open upper end of the tubular cap. A filter tray (40) having a smaller diameter than the tubular cap includes a ledge (44) extending radially inward from the tray. A removable catalytic converter filter insert (50) within the tubular cap is supported on the ledge.