4 inch x 8 foot UL 181 Class 1 Non-Insulated HVAC Air Connector – 5 Layer – Item #414UL-8

★★★★★ 4.9 89 reviews

$90.00
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Product details

Management number 213615124 Release Date 2026/04/12 List Price $36.00 Model Number 213615124
Category

The Lambro 4-inch by 8-foot UL 181 Class 1 approved, non-insulated air connector, suitable for HVAC systems operating at low to medium pressure, and exhaust applications. Manufactured with multiple layers of aluminum/polyester, bound by a fire-resistant adhesive enduring up to 250F. A galvanized wire helix reinforces the duct, preventing collapse. While it's recommended not to install beyond 14 feet, it can be cut to size. Ensure local building codes are checked before installation.

  • UL 181 Class 1 Certified Duct: Marked and Listed
  • Installation Length Limit: Maximum 14 Feet
  • Operating Temperature Limit: Up to 250F
  • Ideal Use: Bath Fan Exhaust Ventilation
  • Construction: Multiple Layers of Aluminum/Polyester
  • Additional Support: Galvanized Helix Wire
  • Ease of Installation: Flexible Design
  • Prohibited Use: Clothes Dryer Installations (Use UL 2158A Duct)
  • Clamps Not Included: Requires Separate Purchase
Color Silver
Brand Name Lambro
Manufacturer Lambro
Material Type Aluminum, Polyester

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89 ratings | 36 reviews
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