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

The JP Lamborn MHP25B-14 flexible air duct is manufactured for HVAC professionals requiring R4.2 thermal insulation and consistent airflow performance. Designed for integration in supply and return air systems, this duct features a reinforced aluminum/polyester laminate core, fiberglass insulation, and a silver vapor barrier jacket to ensure mechanical durability and thermal integrity. It is suitable for residential and light commercial duct applications within standard system operating parameters.

Details

• Model: MHP25B-14
• Manufacturer: JP Lamborn
• Equivalent Product: Hart & Cooley Flexible Air Duct, Series: Residential
• Insulation Rating: R4.2
• Jacket Material: Silver vapor barrier, reinforced for tensile and puncture resistance
• Core Construction: Multi-layer aluminum/polyester laminate with corrosion-resistant steel wire helix
• Inside Diameter: 14 inches
• Length: 25 feet
• Maximum Air Velocity: 5000 FPM
• Temperature Range: -20°F to 140°F (-29°C to 60°C)
• Pressure Rating: Designed for standard residential static pressure applications
• Application: Supply and return air distribution for residential and light commercial HVAC systems
• Standards/Compliance: UL 181 Class 1 Air Duct, NFPA 90A/90B, ASTM E84 Flame and Smoke
• Part Number: 2036758

Summary

The JP Lamborn MHP25B-14 R4.2 flexible insulated duct provides HVAC contractors with a code-compliant air distribution component featuring a reinforced core and silver vapor barrier jacket. Built for consistent performance and thermal efficiency, this duct meets UL and NFPA standards for residential and light commercial system installations.