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Manufacturer Hot-Sale Flame Retardant Rockwool Roll/Felt for Construction and DIY Projects Insulation. Class A Fire Rating: Non-combustible material providing superior fire protection and safety. Customizable Thickness: Thickness options from 30 to 100 mm to suit specific project needs. Noise Reduction: Exceptional sound absorption capabilities for serene environments. Versatile Applications: Ideal for building insulation, fire-rated ducts, and industrial use. Professional Support: Online technical support and on-site construction assistance available.