Lambro Industries 604WTP Air Intake Louver Vent 4 Inches

Product Description

The LAMBRO INDUSTRIES 604WTP is a white plastic air intake louver vent designed for residential ventilation applications. The unit includes an integrated screen and an 11-inch tail pipe for connection to ductwork. This type of louvered intake vent allows fresh outside air to enter a structure while the screen prevents insects, debris, and other foreign material from entering the air stream. HVAC technicians and general contractors install this fitting as part of combustion air, exhaust, or fresh-air ventilation systems where a flush wall or soffit termination is required.

The 604WTP is suited for residential and light commercial installations where a 4-inch duct termination is needed. It is commonly installed through exterior walls, soffits, or rim joist areas to serve mechanical ventilation, dryer venting supplement, or air intake functions. The white finish blends with standard trim and siding. The tail pipe extends into the wall cavity, simplifying connection to round duct or flexible duct without additional adapters in most standard-depth applications.

Key Features

• 4-inch opening matches standard residential round duct sizing
• Integrated insect and debris screen protects the air stream
• 11-inch tail pipe allows direct connection to ductwork within typical wall depths
• White plastic construction resists corrosion and moisture
• Louvered face provides directional airflow control at the termination point

Compatibility

Designed as an OEM-style replacement and new-installation fitting for 4-inch round duct terminations in residential and light commercial ventilation systems.

Installation Notes

Installation is typically performed by HVAC technicians or general contractors following local mechanical codes. Shut off any associated mechanical ventilation equipment before cutting the penetration and securing the fitting. Seal around the exterior flange with an appropriate weatherproof caulk to prevent water intrusion. Ensure the louver orientation and screen are unobstructed after installation and verify airflow direction meets the requirements of the connected system.

Technical Specifications

• Duct Diameter: 4 inches
• Tail Pipe Length: 11 inches
• Color: White
• Material: Plastic
• Weight: 6.7 pounds
• Package Quantity: 10 per unit of measure

Standard Information

• Brand: LAMBRO INDUSTRIES
• Manufacturer Part Number: 604WTP