Unico upc-26tcr8-6 R8 Sound Attenuator Flex Duct Box of 6

Product Description

The UNICO upc-26tcr8-6 is a round, sound-attenuating flexible supply duct engineered for use with the Unico high-velocity air distribution system. Each length measures 2 inches inside diameter with a 6-inch outside diameter and is rated at R8.0 thermal insulation, achieved through two layers of fiberglass blanket insulation and a double vapor seal. Pre-fitted Twist-Fit connectors on each end allow fast, secure attachment during installation. The box contains six 12-foot lengths, providing a total of 72 feet of supply duct. Licensed HVAC technicians working with Unico high-velocity systems are the primary installers of this product.

This flex duct is designed specifically for the Unico high-velocity, small-duct system, which can deliver up to 9 tons of cooling capacity while occupying less than one-third of the space required by a conventional ducted system. It is suited for residential and light commercial applications where space constraints make traditional ductwork impractical. The spun-bound nylon inner core provides the sound-attenuating characteristics that distinguish this duct style from aluminum-core alternatives. Applications include new construction and retrofit installations where quiet air delivery and compact duct routing are priorities.

Key Features

• R8.0 insulation rating with two fiberglass blanket layers and double vapor seal to minimize heat transfer and moisture migration
• 2-inch inside diameter with 6-inch outside diameter for high-velocity, small-duct system compatibility
• Spun-bound nylon inner core provides sound attenuation compared to corrugated aluminum core duct
• Two-ply reinforced reflective mylar outer jacket reduces radiant heat transfer and seals against vapor leakage
• Twist-Fit connectors pre-installed on each end for tool-free, positive connections at supply outlets
• Sold in a box of 6 lengths at 12 feet each for 72 total feet per box; duct can be cut to length as needed

Compatibility

Designed for use with the Unico high-velocity, small-duct air distribution system. Verify inside diameter and connector style match existing Unico supply outlet and air handler specifications before ordering.

Installation Notes

Installation of Unico system supply duct should be performed by a licensed HVAC technician familiar with high-velocity air distribution systems. Power down the air handler and confirm the system is de-energized before making any duct connections. Avoid sharp bends that restrict internal diameter or compress the insulation layers, as this degrades both airflow and thermal performance. Follow local mechanical codes and the manufacturer installation guide for minimum bend radius, support spacing, and plenum-rating requirements.

Technical Specifications

• Inside Diameter: 2 inches
• Outside Diameter: 6 inches
• Length per Piece: 12 feet
• Quantity per Box: 6 lengths
• Total Length per Box: 72 feet
• Insulation Rating: R8.0
• Insulation Layers: Two fiberglass blanket layers with double vapor seal
• Inner Core Material: Spun-bound nylon (sound attenuator style)
• Outer Jacket: Two-ply reinforced reflective mylar
• Connector Type: Twist-Fit, pre-installed on each end
• Duct Style: Sound Attenuator

Standard Information

• Brand: UNICO
• Manufacturer Part Number: upc-26tcr8-6