Lambro Industries 143WS 4 Inch White Plastic Soffit Vent

Product Description

The LAMBRO INDUSTRIES 143WS is a 4-inch white plastic soffit vent designed to provide exhaust termination for dryer ducts and ventilation runs that exit through a soffit. The unit includes an integrated screen that helps prevent pest intrusion while allowing airflow to pass through the duct opening. Made from white plastic construction, it blends with standard soffit panels and resists moisture common in exterior installation environments. HVAC technicians and installers use this vent as the termination point for residential ventilation projects requiring a discreet, low-profile exit point.

This soffit vent is suited for residential applications where wall or roof termination is not practical and soffit exit is the preferred route. Common installations include laundry room dryer exhaust runs, bathroom exhaust fan duct terminations, and general ventilation applications. The 4-inch collar size matches standard duct diameters used throughout residential construction and retrofit work, making it a straightforward fit for new builds and replacement projects alike.

Key Features

• 4-inch collar size matches standard residential duct diameter
• Integrated screen helps block pest and debris intrusion at the vent opening
• White plastic construction suitable for exterior soffit installation
• Low-profile design blends with standard soffit panel finishes
• Moisture-resistant plastic material appropriate for exterior use

Compatibility

Designed as an OEM-style replacement or new-installation soffit vent termination for residential 4-inch ventilation duct systems including dryer exhaust and bath fan applications.

Installation Notes

Installation is typically performed by HVAC technicians or general contractors as part of a duct termination rough-in or replacement. Power down any associated exhaust fan or appliance before making duct connections at the termination point. Ensure the duct run is properly supported and sealed before securing the vent to the soffit panel. Local building codes may require specific clearances from eaves, windows, or other openings, so consult applicable mechanical codes before finalizing placement.

Technical Specifications

• Duct Diameter: 4 inches
• Color: White
• Material: Plastic
• Screen Included: Yes
• Mount Location: Soffit

Standard Information

• Brand: LAMBRO INDUSTRIES
• Manufacturer Part Number: 143WS