Lambro Industries 302L Aluminum Flexible Duct 4in X 8ft

Product Description

The LAMBRO INDUSTRIES 302L is a compressed aluminum flexible duct designed for ventilation and exhaust applications in residential and light commercial HVAC systems. Constructed from aluminum, this flex duct ships compressed for compact storage and easier job-site handling. At 4 inches in diameter and 8 feet in length, it suits a wide range of ducted exhaust runs where a lightweight, corrosion-resistant connector is required. Licensed HVAC technicians and sheet metal installers typically specify this type of flex duct for dryer exhaust, bathroom exhaust fans, and inline fan connections where rigid duct transitions are not practical.

This duct is suited for residential and light commercial ventilation installations. Common applications include connecting exhaust fans to exterior terminations, routing dryer exhaust from appliance to wall cap, and bridging rigid duct runs to equipment flanges. The 4-inch diameter is a standard size across many exhaust fan and dryer installations. The compressed ship format allows multiple units to be stored or transported without significant bulk, making it a practical stock item for service vans and supply rooms.

Key Features

• Aluminum construction provides corrosion resistance for exhaust and ventilation service
• 4-inch diameter matches common exhaust fan and dryer exhaust fitting sizes
• 8-foot length provides sufficient run for most residential exhaust connections
• Ships in compressed form for compact storage and ease of transport
• Lightweight material simplifies overhead and wall-cavity installation

Compatibility

Designed as an OEM-style replacement and general-use flexible duct connector for 4-inch exhaust fan outlets, dryer exhaust ports, and inline fan installations in residential and light commercial ventilation systems.

Installation Notes

Installation is typically performed by a licensed HVAC technician or qualified installer. Power down any connected fan or appliance at the breaker before disconnecting or attaching flex duct. Secure both ends with approved clamps or foil tape rated for the application — never use standard duct tape on exhaust runs. Follow local mechanical codes and manufacturer guidelines for maximum flex duct run length and bend radius to maintain proper airflow.

Technical Specifications

• Diameter: 4 inches
• Length: 8 feet
• Material: Aluminum
• Ship Condition: Compressed
• Weight: 8.01 pounds
• Package Quantity: 9 per case

Standard Information

• Brand: LAMBRO INDUSTRIES
• Manufacturer Part Number: 302L