Unico upc-25t-r8-4 Flex Duct R8 2 in X 25 Ft Box of 4

Product Description

The UNICO upc-25t-r8-4 is a round, twist-fit aluminum supply flex duct designed for use with the Unico high-velocity air distribution system. Each piece measures 2 inches inside diameter and 25 feet in length, and the box contains 4 lengths. The duct features a two-ply aluminum core wrapped in a tough aluminized mylar outer jacket that delivers an R-8.0 insulation value. It is UL181-certified as an air duct, meeting the listing requirements that most mechanical codes require for supply-side ductwork. Licensed HVAC technicians and mechanical contractors install this product in high-velocity system retrofits and new construction.

This flex duct is purpose-built for the Unico high-velocity small-duct system, which uses less than one-third the space of a conventional duct system and can deliver up to 9 tons of cooling capacity in the same footprint as a 3-ton traditional unit. The 2-inch diameter twist-fit design integrates directly into Unico supply plenum outlets, making it well-suited for residential and light commercial retrofit projects where space inside walls, floors, and ceilings is limited.

Key Features

• UL181-certified air duct construction meets mechanical code listing requirements for supply-side installation
• R-8.0 insulation value reduces heat gain along supply runs
• Two-ply aluminum core provides structural integrity and airtight performance
• Tough aluminized mylar outer wrap resists puncture and moisture during installation
• Twist-fit end design simplifies connection to Unico plenum outlets
• Box of 4 lengths at 25 feet each allows efficient stocking for multi-run jobs

Compatibility

Designed for use with the Unico high-velocity small-duct air distribution system. The 2-inch inside diameter and twist-fit termination are specific to Unico supply outlet connections.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with high-velocity small-duct systems. Power down the air handler and verify the system is de-energized before connecting or repositioning supply duct runs. Support the duct at intervals consistent with local mechanical code requirements to prevent sagging, which can reduce airflow and system performance. Do not compress or kink the duct along its run, as this will increase static pressure and degrade system efficiency.

Technical Specifications

• Inside Diameter: 2 inches
• Length per Piece: 25 feet
• Quantity per Box: 4
• Insulation Value: R-8.0
• Core Construction: Two-ply aluminum
• Outer Wrap: Aluminized mylar
• Listing: UL181 certified air duct
• Duct Type: Round twist-fit supply flex duct

Standard Information

• Brand: UNICO
• Manufacturer Part Number: upc-25t-r8-4