Rockwool Comfortbatt Fire-Resistant Insulation from Canada
Stone wool batts (classified as glass wool equivalent) with R-23 rating for stone wool fire-rated walls, offering superior sound absorption. HTS 7019.80.10 applies as it meets fused silica/mineral wool insulation criteria in Chapter 70.
Duty Rate — Canada → United States
14.9%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Import Tips
• Submit certificates verifying non-combustible properties and fiber analysis for fire-rated claims
• Package in consumer-ready retail units to qualify as insulation products, not bulk fibers
• Watch for reclassification if fibers exceed 6mm average diameter threshold for wool definition