7" x 25' Silver Jacket Flex Duct, R6

Product Overview

The JP Lamborn MHP25R6B-07 Flexible Air Duct is an R-6 insulated air distribution component designed for residential and light commercial HVAC systems. Manufactured with a durable silver vapor-barrier jacket and a wire-reinforced core, this duct provides efficient airflow delivery and thermal performance for supply and return applications. Its flexible construction allows for quick installation while maintaining compliance with mechanical, fire, and energy code requirements.

Technical Specifications

• Model: MHP25R6B-07
• Manufacturer: JP Lamborn (Hart & Cooley)
• Series: Residential
• Product Type: Insulated Flexible Air Duct
• Inside Diameter: 7 inches
• Length: 25 feet
• Insulation Value: R-6
• Outer Jacket: Silver vapor-barrier jacket for moisture protection and durability
• 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: Thermal fiberglass blanket with polyethylene vapor barrier
• Application: Supply and return air distribution in HVAC systems for residential and light commercial environments
• Compliance: UL 181 Class 1 Air Duct; conforms to NFPA 90A and 90B standards
• Installation: Approved for installation in both conditioned and unconditioned spaces per local mechanical codes

Professional Notes

Install in accordance with JP Lamborn and SMACNA duct construction standards. Ensure ducts are fully extended to minimize static pressure losses and supported at required intervals to prevent sagging. Seal all joints and connections using UL 181-approved tape or mastic. Avoid sharp bends or compression to maintain airflow performance and insulation integrity. Properly secure terminations at collars, boots, or plenums to meet HVAC system design specifications.

Summary

The JP Lamborn MHP25R6B-07 Flexible Air Duct is a 7-inch diameter, 25-foot R-6 insulated duct with a silver vapor-barrier jacket. Rated for 5000 fpm airflow and -20°F to 140°F operation, it provides durable, code-compliant air distribution performance for professional HVAC installations.