Thermaflex 56316000002 Flex Duct 16 in X 25 Ft R8

Product Description

The THERMAFLEX 56316000002 is an R-8 insulated flexible air duct measuring 16 inches in diameter and 25 feet in length, designed for low-to-medium pressure HVAC air distribution systems. The inner core is a smooth polyester film that minimizes airflow resistance and maintains an airtight seal. A heavy-gauge, corrosion-resistant steel wire helix encapsulates the inner core and supports a thick fiberglass insulation blanket rated at R-8. The outer jacket is a bi-directional reinforced metallized vapor barrier that resists unraveling and moisture intrusion. Licensed HVAC technicians and mechanical contractors install this duct in residential and light commercial duct systems.

This flexible duct is suited for residential forced-air systems and light commercial HVAC applications where branch runs, trunk-to-register connections, or equipment connections require a durable, insulated duct section. The 16-inch diameter accommodates high-volume air distribution branch runs. The 25-foot length provides enough material for long branch runs or multiple shorter connections in a single coil, reducing the need for additional fittings or splices.

Key Features

• R-8 fiberglass insulation blanket reduces thermal loss in unconditioned spaces
• Smooth polyester film inner core minimizes static pressure drop
• Corrosion-resistant steel wire helix maintains round cross-section under pressure
• Bi-directional reinforced metallized outer vapor barrier resists unraveling and moisture
• Airtight inner core construction rated for low-to-medium pressure systems
• 16-inch diameter and 25-foot length suit high-volume branch duct runs

Compatibility

Designed as an OEM-style replacement and new-installation flexible duct for residential and light commercial forced-air HVAC systems requiring a 16-inch diameter insulated flex duct with R-8 thermal performance.

Installation Notes

Installation should be performed by a licensed HVAC technician or mechanical contractor in accordance with SMACNA guidelines and local mechanical codes. Power down and lock out the air handling unit before connecting or modifying any duct sections. Flex duct should be fully extended without compression or sharp bends to maintain rated airflow and insulation performance. Secure connections at each end with an approved duct strap or clamp and seal with listed mastic or foil tape per code requirements.