About This Premium Insulation: Features R6-rated insulation, ensuring optimal thermal efficiency for both heating and cooling applications. Durable Construction: Crafted with a high-strength, flexible aluminum core and a resilient silver jacket, providing long-lasting performance and resistance to wear and tear. Easy Installation: Comes with 2 stainless steel clamps for quick and secure connections, making it suitable for DIY projects and professional installations. Versatile Application: Ideal for HVAC systems, including air conditioners, dryers, exhausts, and ventilation ducts, accommodating various residential and commercial needs. Flexible Design: The 25-foot length and flexible structure allow for easy routing in tight spaces, ensuring a seamless fit in any setup. Overview Material : Fiberglass Brand : Cuchiilo Item Thickness : 4 Inches Recommended Uses For Product : Thermal insulation for HVAC systems Product Dimensions : 4"W