Lambro 414ul Flexible Air Connector, 4 In. X 25 Ft., Ul 181 Class 1

The Lambro 414UL Flexible Air Connector is a durable aluminum foil duct designed for bath fan exhaust and general venting applications where building codes require aluminum construction. This connector removes moist air and humidity from bathrooms and other spaces. The flexible design makes installation easier compared to rigid ducts.

With a maximum operating temperature of 250°F, this connector provides reliable performance in hot air venting scenarios. The internal steel wire construction adds strength and support while maintaining the flexibility needed for custom routing. UL 181 Class 1 certification ensures the duct meets fire-resistant performance standards for safe residential use.

Features and Benefits

• Aluminum Foil Construction: Ideal for installations where building codes require all-aluminum duct materials.
• Steel Wire Support: Internal reinforcement provides durability and helps the duct maintain its shape during installation and use.
• Flexible Design: Easier to install than rigid ducts for bath fan exhaust applications.
• Temperature Rating: Rated for maximum operating temperatures of 250°F, suitable for hot air exhaust applications.
• UL 181 Class 1 Certified: Meets fire-resistant performance standards for residential ventilation systems.

Specifications

• Brand: Lambro
• Model: 414UL
• Diameter: 4 inches
• Length: 25 feet
• Material: Aluminum foil with internal steel wire reinforcement
• Maximum Operating Temperature: 250°F
• Certification: UL 181 Class 1 listed and labeled
• Not for clothes dryer exhaust applications
• Do not install in lengths greater than 14 feet