JPL MHP-25 4-in Insulated 25-ft. Flex Duct

The JPL MHP-25 4-inch Insulated Flex Duct is a UL listed Class 1 insulated flexible air duct designed for durability and superior airflow efficiency.

This 25-foot fiberglass insulated flexible duct is ideal for 4-inch supply and return connections in low to medium pressure duct systems. Constructed with durable materials, the JPL insulated duct is designed with a spring steel wire helix, encapsulated in a 2-ply air-tight inner core, with a unique metalized reinforced vapor barrier surrounding the entire duct.

Key Features and Benefits of the JPL MHP-25 4-inch Insulated Flex Duct

• Efficient Thermal Performance: Available with fiberglass insulation in certified R6 or R8 value models, for excellent temperature control in indoor applications.
• Robust Construction: Features a spring steel wire helix enclosed by an oversized 3/8-inch airtight two-ply inner core and insulation. Metalized polyester reinforces its vapor barrier to enhance thermal performance.
• GREENGUARD Gold Certified and Formaldehyde Free: Ensures low chemical emissions and VOCs to ensure healthy indoor air.
• UL Listed and Labeled: This UL-181 Class 1 Air Duct conforms to strict safety and performance standards.
• Pressure Ratings: Maximum positive pressure is 6 inches w.g. (4-12 inches) and 4 inches w.g. (14-22 inches), and maximum negative pressure is 1 inch w.g. (4-10 inches) and 1/2 inch w.g. (12-22 inches).
• Versatile Applications: Perfect for general HVAC ducting and specific installations like bathroom fan exhaust systems.

Multiple Insulation Rated Models

Select the insulation-rated model ideal for your application to ensure maximum comfort, energy savings, and optimal system performance tailored specifically to your climate and HVAC requirements:

• JPL Insulation-Rated R6: Provides good thermal resistance typically used in standard residential heating and cooling and venting systems, where a balance of thermal efficiency, affordability and flexibility is needed.
• JPL Insulation-Rated R8: This higher-rated insulation offers superior thermal resistance, making it ideal for more extreme climates with significant temperature fluctuations, or when ducts run through unconditioned spaces where there’s a significant temperature difference between the duct and surrounding air. R8 insulation can also offer greater efficiency in longer duct runs and configurations.