Dundas Jafine LH4BXZ Exhaust Hood Black Vent Flap 4 in

Product Description

The DUNDAS JAFINE LH4BXZ is a 4-inch black polypropylene exhaust hood with a louvered vent flap, designed for dryer and exhaust vent terminations on exterior walls. Cammed louvers pivot freely to reduce sticking, a common failure point on standard flap-style hoods. The cap assembly snaps directly onto aluminum pipe, eliminating the need for lint-trapping staples at the connection joint. UV-resistant polypropylene construction protects the hood from sun degradation over time. A molded caulk edge is built into the perimeter to help installers achieve a clean, finished seal at the wall penetration. This hood is installed by HVAC technicians, sheet metal contractors, and plumbers handling dryer or bath exhaust terminations.

The LH4BXZ is suited for residential exhaust vent terminations where a 4-inch duct exits through an exterior wall or soffit. It is compatible with standard 4-inch round aluminum exhaust pipe and is designed to snap on and off J-channel trim for simplified installation and future replacement without damaging the surrounding siding. The black finish can be painted to match the home exterior. Typical applications include clothes dryer exhaust, bathroom fan exhaust, and kitchen range hood lateral duct terminations.

Key Features

• Cammed louvers pivot easily to resist sticking and improve airflow during operation
• Snap-on cap-to-pipe assembly eliminates lint-trapping staples at the joint
• Molded caulk edge guides a clean, professional caulk bead at the wall penetration
• Designed to snap on and off J-channel siding trim for easy install and replacement
• UV-resistant polypropylene resists sun degradation on exterior exposures
• Paintable black finish allows color-matching to exterior surfaces

Compatibility

Designed as a snap-on replacement or new-installation exhaust hood for standard 4-inch round aluminum exhaust duct terminations on residential exterior walls with J-channel siding trim.

Installation Notes

Installed by HVAC technicians or sheet metal contractors during new construction or exhaust system service. Shut down the associated exhaust appliance before removing or replacing the hood. Apply exterior-grade caulk along the molded caulk edge at the wall penetration to maintain a weathertight seal, per local building code requirements. Do not use sheet metal screws or staples at the pipe-to-cap joint; the snap-on design is intended to function without mechanical fasteners at that connection.

Technical Specifications

• Duct Size: 4 inches
• Material: Polypropylene
• Color: Black
• UV Inhibitor: Yes
• Weight: 7 pounds

Standard Information

• Brand: DUNDAS JAFINE
• Manufacturer Part Number: LH4BXZ