Lambro Industries 322ULC Rigiflex Dryer Duct 4in X 2ft

Product Description

The LAMBRO INDUSTRIES 322ULC is a semi-rigid dryer exhaust duct designed for residential clothes dryer venting applications. Measuring 4 inches in diameter and 2 feet in length, it features quick connect collars on each end for fast, tool-free connections to dryer outlets and wall caps. The duct meets UL2158A certification requirements for dryer transition ducts, making it compliant for use in installations where listed materials are required. HVAC technicians and appliance installers use this duct as a short transition section between the dryer unit and the in-wall exhaust pathway.

This duct is suited for residential laundry room installations where space behind the dryer is limited and a short, flexible transition section is needed. The quick connect collar design reduces installation time and simplifies future dryer servicing or replacement. It is appropriate for use with standard 4-inch exhaust outlets found on electric and gas dryers in single-family homes, apartments, and condominiums.

Key Features

• 4-inch diameter matches standard residential dryer exhaust outlet sizing
• 2-foot length provides a short, manageable transition run
• Quick connect collars on both ends for fast, secure attachment
• UL2158A listed for dryer transition duct applications
• Semi-rigid Rigiflex construction maintains airflow with minimal restriction compared to fully flexible foil duct

Compatibility

Designed as an OEM-style replacement or new-installation transition duct for standard 4-inch residential dryer exhaust connections.

Installation Notes

Installation should be performed by a qualified HVAC technician or appliance installer in accordance with local mechanical codes and the dryer manufacturer's installation instructions. Disconnect power to electric dryers or shut off the gas supply to gas dryers before disconnecting or reconnecting exhaust ducting. Keep the transition duct run as straight and short as possible to maintain proper airflow and reduce lint accumulation. Do not use sheet metal screws that protrude into the duct interior, as they collect lint and create a fire hazard.

Technical Specifications

• Diameter: 4 inches
• Length: 2 feet
• Connection Type: Quick connect collars
• Certification: UL2158A
• Weight: 15.25 pounds
• Package Quantity: 12 per case

Standard Information

• Brand: LAMBRO INDUSTRIES
• Manufacturer Part Number: 322ULC