354r Roof Vent Cap, 4 In., Black Plastic

The Lambro 354R is a black ABS plastic exhaust roof vent cap designed for venting moist air and humidity from your home through the roof. It is ideal for clothes dryer exhaust, bathroom fan exhaust, and other general venting applications where moisture needs to be expelled safely to the exterior. This vent cap works with both 3-inch and 4-inch installations and is engineered specifically for shingled roof installations.

A properly installed roof vent creates a watertight seal that protects against moisture infiltration. The Lambro 354R features a redesigned damper that allows maximum airflow while preventing backflow of exhaust air when the vent is not in use, making it suitable for new or replacement vent installations.

Features and Benefits

• Damper Design: The hinged damper opens when air flows out and closes when not in use, maximizing airflow while minimizing back pressure and preventing backflow of exhaust air.
• Removable Screen: The included hinged and removable screen makes cleaning and maintenance simple, and can be removed entirely for clothes dryer installations when needed.
• Reliable Mounting: The 1.5-inch collar provides secure installation and helps create a watertight seal to protect against moisture infiltration.
• ABS Plastic Construction: Built from durable ABS plastic material for reliable performance in roof venting applications.
• Dual-Size Compatibility: Works with both 3-inch and 4-inch duct installations, offering flexibility for new or replacement vent applications.

Specifications

• Brand: Lambro
• Model: 354R
• Size: 4 In.
• Color: Black
• Material: ABS plastic
• Mounting Collar Length: 1.5 In.
• Duct Compatibility: 3 In. and 4 In. installations
• Shape: Round
• Includes: Damper, removable screen, and collars

Safety

• Shingled Roofs Only: This roof vent cap is designed for shingled roof installations only and should not be used on other roof types.
• Dryer Vent Setup: For clothes dryer exhaust installation, the plastic screen must be removed and the screen holder tab should be trimmed off with a utility knife.

Descriptions are AI-generated. For accurate measurements, please call the store to confirm.