Lambro Industries 301 Aluminum Flexible Duct 3 in 8 Ft

Product Description

The LAMBRO INDUSTRIES 301 is a 3-inch aluminum flexible duct sold in a bulk pack configuration, supplied compressed to 8 feet per section. This flexible duct is used to connect HVAC equipment, exhaust fans, and dryer vents to rigid ductwork or wall terminations. Constructed from aluminum, it offers lightweight handling and resistance to moisture and corrosion. HVAC technicians and sheet metal installers typically work with this duct during new construction or retrofit applications where rigid duct runs need a flexible transition. The 3-inch diameter makes it suitable for smaller exhaust and ventilation runs.

This flexible duct is primarily used in residential and light commercial ventilation systems. Common applications include bathroom exhaust fan connections, range hood venting, dryer exhaust runs, and HVAC branch takeoffs where a flexible transition between rigid ductwork and a register or equipment collar is required. The compressed 8-foot length allows for compact storage and easy transport to the job site. The bulk pack quantity of 14 units per package makes this product well suited for contractors stocking up for multiple installations or ongoing service work.

Key Features

• 3-inch diameter fits standard exhaust fan collars and small HVAC branch connections
• Aluminum construction provides lightweight handling with moisture and corrosion resistance
• Supplied compressed to 8 feet per section for compact storage and transport
• Bulk pack of 14 units per package supports multi-unit or contractor-volume jobs
• Flexible design accommodates directional changes between rigid duct segments and equipment connections

Compatibility

Designed as an OEM-style replacement and general-use flexible duct for residential and light commercial ventilation applications requiring a 3-inch diameter connection.

Installation Notes

Installation is typically performed by HVAC technicians or sheet metal contractors following local mechanical codes and ASHRAE ventilation guidelines. Power or circuit control to any connected fan or equipment should be shut off at the breaker before beginning work. Flexible duct runs should be kept as short and straight as possible to minimize airflow resistance, and the duct should be fully extended without kinks or sharp bends. Secure both ends with approved clamps or foil tape rated for duct applications.

Technical Specifications

• Diameter: 3 inches
• Compressed Length: 8 feet
• Material: Aluminum
• Weight: 9 pounds
• Package Quantity: 14 units per package

Standard Information

• Brand: LAMBRO INDUSTRIES
• Manufacturer Part Number: 301