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White plastic louvered air intake vent with metal screen

Lambro Ind.

Lambro Ind. 604 4-In. White Plastic Air Intake Louver Vent

SKU CH-9VDQ-RKHP0

4-inch white plastic air intake louver vent with fixed louvers and a metal screen to block debris, UV inhibitor resists fading, not for dryer venting

  • Stationary louvers provide consistent airflow without moving parts
  • Metal screen blocks debris and pests from entering the vent
  • UV inhibitor helps prevent premature fading of the white plastic
  • Designed specifically for air intake, not dryer exhaust applications
  • Manufactured in the United States

4-Inch White Plastic Air Intake Louver Vent

The Lambro 604W is a stationary louver vent designed for air intake on residential or light-commercial exteriors. Its fixed blades and integrated metal screen keep out debris, insects and wind-driven rain while allowing airflow into the building envelope.

Replaces damaged or missing wall vents

This unit suits installations where an existing 4-inch intake hood has cracked, faded or lost its screen. The jump is worthwhile when the old vent no longer blocks pests or when UV damage has weakened the plastic housing.

Simple screw-mount installation

The vent fastens directly to the wall over a 4-inch duct opening with standard screws; no specialised tools are required. Common issues include forgetting to caulk the flange perimeter, which lets water track behind the siding, and using the vent for dryer exhaust, which the manufacturer explicitly advises against.

How it compares

Measured against everything we stock in Tech Gadgets & Accessories, at today’s prices. Recalculated every night.

Price $19.99
Cheaper than about 60% of the 5,998 comparable items (median $24.99).

Specifications

No published specifications for this item yet.

Questions about this item

What size opening does the 4-inch louver vent require for installation?

The vent is designed for a 4-inch duct opening; cut a matching hole in the exterior wall and secure the flange with screws or nails through the mounting holes.

How do I attach the vent to the wall and what step is often missed?

Fasten the mounting flange to the sheathing with corrosion-resistant screws, then caulk the perimeter — many installers forget the sealant and later get water intrusion.

Does the metal screen need cleaning or replacement over time?

The fixed metal screen blocks debris and insects; inspect it annually and brush away lint or dust buildup — no replacement is required unless the screen is physically damaged.

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