VEVOR Insulated Flexible Duct 4" x 25 Ft R-6.0，Energy-Efficient 3-Layer HVAC Hose with 2 Clamps for HVAC & Exhaust Ductwork

SpecificationsModel: OW108Diameter: 4.25 inch / 108 mmTube Thickness (in extended state): 0.98 inches / 25 mmLength: 300 inches / 7620 mmThermal Resistance Value: R-6.0Net Weight (Including all Accessories): 8.04lbs / 3.65 kgProduct Dimensions (in extended state): 6.49 x 6.49 x 300 inch / 165 x 165 x 7620 mmPackage ContentFlexible Duct x 1Stainless Steel Clamps x 2

• Efficient Insulation: Made with thick aluminum foil material and high-strength spiral steel wire, encased in a layer of fiberglass insulation, effectively reducing heat loss and improving thermal efficiency.
• High-Quality Fiberglass Insulation: Reduces energy waste while absorbing noise generated during operation, enhancing comfort.
• 3-Layer Tough: Constructed from durable aluminum foil and PET film, reinforced with a fiberglass grid, achieving an R-6.0 Thermal Resistance value, ensuring safety during operation and extending the product's lifespan.
• Flexible and Easy to Use: Can be bent, compressed, or cut as needed for installation without affecting the interior of the duct, reducing air resistance and improving installation adaptability.
• Variety of Applications: Primarily used for temperature control, dehumidification, and ventilation needs in various settings such as central air conditioning, fresh air systems, and greenhouse tents.