Get Your Free Sample Roll and Gift

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Contractors and fabricators can feel more confident working with Performance+® Duct Liner. That’s because it’s the only fiberglass duct liner that’s formaldehyde-free. It also passed rigorous, third-party tests to earn Asthma & Allergy Friendly® and Verified Healthier AirTM certifications.

Not only better for indoor air, its flexible, mat-faced design makes it easier to cut and position, allowing for a faster, smoother install. Plus, it contains 55% recycled glass, so it supports sustainability.

If you haven’t tried Knauf Performance+® fiberglass duct liner insulation, now is the time.

When you request a sample from your rep, you’ll receive free swag! Offer good through January 31, 2026.

Request your free sample roll today!

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Knauf Insulation North America is part of the Knauf Group AG, a family-owned global manufacturer of building materials based in Iphofen, Germany. Knauf leverages the expertise of over 35,000 employees across 250 production facilities in 86 countries. In North America, Knauf Insulation is a leading manufacturer of thermal and acoustical fiberglass insulation for residential, commercial, industrial, OEM and metal building applications.