16" x 25' Silver Jacket Flex Duct, R4.2

The JP Lamborn MHP25B-16 flexible air duct is engineered for professional HVAC applications requiring R4.2 thermal insulation and consistent air delivery performance. Constructed with a multi-layer aluminum/polyester core, fiberglass insulation, and a silver vapor barrier jacket, this duct is suitable for supply and return air systems operating within standard residential and light commercial parameters. The product meets applicable mechanical and fire safety standards for duct materials used in air distribution systems.

Details

• Model: MHP25B-16
• Manufacturer: JP Lamborn
• Equivalent Product: Hart & Cooley Flexible Air Duct, Series: Residential
• Insulation Rating: R4.2
• Jacket Material: Silver vapor barrier, reinforced for mechanical strength and moisture resistance
• Core Construction: Aluminum/polyester laminate with corrosion-resistant steel wire helix
• Inside Diameter: 16 inches
• Length: 25 feet
• Maximum Air Velocity: 5000 FPM
• Temperature Range: -20°F to 140°F (-29°C to 60°C)
• Pressure Rating: Suitable for standard residential static pressure ranges
• Application: Supply and return air distribution in residential and light commercial HVAC systems
• Standards/Compliance: UL 181 Class 1 Air Duct, NFPA 90A/90B, ASTM E84 Flame and Smoke
• Part Number: 2036759

Summary

The JP Lamborn MHP25B-16 R4.2 flexible insulated duct provides HVAC contractors with a reliable, code-compliant component for air distribution systems. Its reinforced silver vapor barrier and multi-layer core deliver long-term mechanical integrity, maintaining airflow efficiency and insulation performance under standard installation and operating conditions.