Quietflex 10KM Flex Duct 10 Inch 25 Ft R-4.2 Insulation

Product Description

The QUIETFLEX 10KM is a 10-inch round flexible duct designed for supply and return air distribution in residential and light commercial HVAC systems. At 25 feet in length with an R-4.2 insulation value, it delivers reliable airflow while limiting heat transfer through the duct wall. The foil outer jacket resists tearing and moisture intrusion, and the inner core promotes smooth, low-turbulence air delivery. Licensed HVAC technicians install this duct during new construction, system upgrades, and branch-run replacements where flexible routing around structural obstructions is required.

This flexible duct suits residential forced-air heating and cooling applications and light commercial HVAC installations where 10-inch diameter branch runs are specified. It is appropriate for both supply and return air configurations. The 25-foot continuous length reduces the number of field connections needed, which helps maintain system static pressure and limits potential leakage points across the run.

Key Features

• 10-inch inner diameter supports high-volume airflow in trunk-to-register branch runs
• R-4.2 insulation value reduces heat loss and gain along the duct run
• 25-foot length minimizes field connections and associated leakage risk
• Foil outer jacket resists tearing, puncture, and moisture
• Flexible construction allows routing around joists, framing, and other obstructions

Compatibility

Designed as an OEM-style replacement and new-installation flexible duct for residential and light commercial forced-air HVAC systems using 10-inch round duct fittings and collars.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with SMACNA flexible duct installation guidelines and local mechanical codes. Power down the air handler or furnace and close the system disconnect before beginning work. Support the duct at intervals no greater than those specified by the applicable mechanical code to prevent sagging, which reduces airflow and increases static pressure drop. Avoid sharp bends or compressed sections that restrict airflow through the duct run.

Technical Specifications

• Inner Diameter: 10 inches
• Length: 25 feet
• Insulation R-Value: R-4.2
• Jacket Type: Foil outer jacket
• Application: Supply and return air

Standard Information

• Brand: QUIETFLEX
• Manufacturer Part Number: 10KM