10" x 25' Silver Jacket Flex Duct, R8

Product Overview

The JP Lamborn MHP25R8B-10 Flexible Air Duct is an R-8 insulated air distribution component designed for residential and light commercial HVAC systems. Built with a helically wound wire-reinforced core, fiberglass insulation, and a durable silver vapor-barrier jacket, this duct provides reliable airflow and high thermal efficiency. It is suitable for both supply and return applications and complies with UL and NFPA standards for flexible duct construction and installation.

Technical Specifications

• Model: MHP25R8B-10
• Manufacturer: JP Lamborn (Hart & Cooley)
• Series: Residential
• Product Type: Insulated Flexible Air Duct
• Inside Diameter: 10 inches
• Length: 25 feet
• Insulation Value: R-8
• Outer Jacket: Silver vapor-barrier jacket for moisture resistance and abrasion protection
• Air Velocity Rating: 5000 fpm (maximum)
• Temperature Range: -20°F to 140°F (-29°C to 60°C)
• Core Construction: Helically wound, wire-reinforced inner core
• Insulation Type: Fiberglass blanket insulation with polyethylene vapor barrier
• Application: Air distribution for supply and return in residential and light commercial HVAC systems
• Compliance: UL 181 Class 1 Air Duct; conforms to NFPA 90A and NFPA 90B standards
• Installation: Approved for use in conditioned and unconditioned spaces in accordance with mechanical code requirements

Professional Notes

Install in accordance with JP Lamborn and SMACNA flexible duct standards. Fully extend duct lengths to maintain airflow capacity and minimize static pressure losses. Support at regular intervals to prevent sagging or compression of insulation. All joints and fittings must be sealed with UL 181-approved mastic or tape to ensure airtight performance. Avoid sharp bends, kinks, and over-compression to preserve structural integrity and airflow efficiency.

Summary

The JP Lamborn MHP25R8B-10 Flexible Air Duct is a 10-inch diameter, 25-foot R-8 insulated duct featuring a silver vapor-barrier jacket. Rated for 5000 fpm airflow and -20°F to 140°F operation, it delivers code-compliant, thermally efficient, and durable air distribution performance for professional residential and light commercial HVAC installations.