Quietflex 1460 Flexible Air Duct 14in X 25ft R6 Poly

Product Description

The QUIETFLEX 1460 is an R-6 insulated flexible air duct designed for use in residential and light commercial HVAC distribution systems. Constructed with a poly outer jacket and a fiberglass insulation layer sourced from Johns Manville formaldehyde-free material, this flex duct delivers reliable thermal performance at an R-value of 6.0. The UV-inhibited outer jacket resists degradation in attic and crawlspace environments. The oversized core design allows for easier fitting connections and reduces installation time. At 14 inches in diameter and 25 feet in length, this duct section covers significant trunk or branch runs in a single piece, minimizing joints and potential leakage points.

This flexible duct is suited for residential new construction and retrofit HVAC installations where flexible ducting is used to connect air handlers, plenums, or distribution boxes to diffusers and registers. It performs well in attic, crawlspace, and interior chase applications. The R-6 insulation value meets energy code requirements in many climate zones, making it a common specification on residential mechanical plans. HVAC technicians and sheet metal contractors use this duct for both supply and return runs where rigid ductwork is impractical.

Key Features

• R-6.0 insulation value meets common energy code minimums for conditioned space separation
• Johns Manville formaldehyde-free fiberglass insulation core
• UV-inhibited poly outer jacket for attic and exposed-environment durability
• Oversized inner core for easier collar and fitting connections
• Black outer jacket with color-coded, bar-coded product label for quick identification on the job
• 25-foot length reduces mid-run joints and potential air leakage points

Compatibility

Designed as an OEM-style flexible duct replacement or new-installation component for residential and light commercial HVAC air distribution systems requiring 14-inch diameter flexible ducting with R-6 insulation.

Installation Notes

Installation should be performed by a licensed HVAC technician or sheet metal contractor in accordance with SMACNA flexible duct installation standards and applicable local mechanical codes. Power down the air handling unit and close the system before connecting or cutting flex duct sections. Secure both ends with approved clamps and mastic or listed duct tape rated for flexible duct use — standard cloth duct tape is not code-compliant for this application. Avoid sharp bends, compression, or excessive sag, as these conditions significantly reduce airflow and system efficiency.

Technical Specifications

• Diameter: 14 inches
• Length: 25 feet
• R-Value: R-6.0
• Insulation Material: Johns Manville Formaldehyde-Free Fiberglass
• Outer Jacket Material: Poly (UV Inhibited)
• Color: Black
• Insulated: Yes

Standard Information

• Brand: QUIETFLEX
• Manufacturer Part Number: 1460