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The DUNDAS JAFINE LH3BXZ is a 3-inch brown polypropylene exhaust hood designed to terminate dryer vent and exhaust duct runs at the exterior wall of a structure. The cammed louvers pivot freely to open under airflow and close when the system is idle, reducing backdraft and pest intrusion. A molded caulk edge guides the installer for a clean, finished seal against the exterior cladding. The UV-resistant polypropylene construction resists degradation from sun exposure, making it suitable for south- and west-facing wall penetrations. Licensed HVAC technicians and plumbing-mechanical contractors typically supply and install this type of fitting as part of a dryer exhaust or bathroom fan termination assembly.
The LH3BXZ is sized for 3-inch round duct and is intended for residential dryer exhaust, bathroom fan exhaust, or other low-pressure air-handling terminations at exterior walls. The brown finish coordinates with common exterior trim colors and the cap surface can be painted to match the home exterior. The snap-on design fits standard aluminum pipe and J-channel installations, simplifying both new construction rough-in and retrofit replacement without additional fasteners or lint-trapping staples.
Designed as an OEM-style replacement or new-installation exhaust hood for 3-inch round residential dryer vent and exhaust duct terminations at exterior walls.
Installation is typically performed by a licensed HVAC technician or mechanical contractor in accordance with local mechanical codes and the appliance manufacturer's venting requirements. Shut off and disconnect the appliance before disconnecting any existing duct termination. Apply exterior-grade caulk along the molded caulk edge after securing the hood to the wall to ensure a weathertight seal. Do not reduce or obstruct the duct opening, as restricted exhaust can create a fire or moisture hazard.
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