The Lambro semi-rigid 4-inch x 8-foot UL 2158A clothes dryer transition duct is ideal for venting electric or gas clothes dryers to the wall pipe.

The Lambro semi-rigid 4-inch x 8-foot UL 2158A transition duct is ideal for venting an electric or gas clothes dryer to the wall pipe. Most clothes dryer manufacturers recommend UL 2158A-certified semi-rigid ducts.

The transition duct is for new and replacement clothes dryer installations. The semi-rigid duct is flexible; the corrugations throughout prevent collapsing and allow for easy duct bending when needed. Aluminum is corrosion-resistant, non-combustible, and flame-resistant, with a maximum operating temperature of 600°F. When installing the duct, you can cut it to length to allow for stretching for maximum airflow.

A semi-rigid and lightweight non-insulated flexible duct, triple lock is manufactured using a dead soft aluminum strip, spirally wound and mechanically joined together, forming an air-tight and leakproof triple lock seam. The duct manufacturing material is 100% aluminum. The certified UL 2158A duct contains a UL marking on each length.

Please be sure to check local building codes before installation. Please check your clothes dryer manufacturer’s manual for proper installation and exhausting of the clothes dryer.

Features and Benefits:

• Retail bag
• Most clothes dryer manufacturers recommend UL 2158A-certified semi-rigid ducts
• Do not exhaust the clothes dryer into the chimney, a wall, a ceiling, or a concealed space of a building
• Installation from clothes dryer exhaust outlet to the wall pipe to the outside
• Installations lengths of 8′ or less
• UL 2158A certified marked and listed duct
• For use with electric or gas clothes dryers
• Flame-resistant
• Non-combustible
• Maximum operating temperature of 600°F
• Installation clamps (not included)

Product Contains:
(1) 4-inch x 8-foot UL 2158A clothes dryer transition duct (semi-rigid)