Atco Rubber Products FD-12X25-R8FB Silver Flex Duct R8

Product Description

The ATCO RUBBER PRODUCTS FD-12X25-R8FB is a 12-inch diameter, 25-foot silver flexible air duct with R-8 insulation, designed for low-to-medium operating pressure HVAC applications. The outer jacket is constructed from a tri-directional fiberglass scrim reinforced, metallized polyester material, providing durability and resistance to puncture and moisture. The inner core is air-tight and rated UL 181, Class 1, making it suitable for installation in residential and light commercial supply and return air distribution systems. Licensed HVAC technicians and sheet metal contractors are the primary installers of this product.

This flexible duct is used in residential and light commercial HVAC installations where a pre-insulated, UL-listed duct section is required. Common applications include supply air branch runs from a central plenum or trunk line to diffusers, registers, and grilles. The R-8 insulation value makes it appropriate for unconditioned spaces such as attics and crawl spaces where thermal loss is a concern. It ships in bag form for compact storage and straightforward jobsite handling.

Key Features

• UL 181, Class 1 Air Duct rating for code-compliant installation in residential and commercial systems
• R-8 insulation value suited for unconditioned attic and crawl space runs
• Tri-directional fiberglass scrim reinforced metallized polyester outer jacket for puncture and moisture resistance
• Air-tight inner core designed for low-to-medium operating pressures
• 12-inch diameter and 25-foot length in a single bagged section for efficient material handling

Compatibility

Designed as an OEM-style flexible duct section for use in residential and light commercial HVAC air distribution systems requiring UL 181, Class 1 rated flexible duct with R-8 insulation.

Installation Notes

Installation should be performed by a licensed HVAC technician or sheet metal contractor in accordance with SMACNA guidelines and local mechanical codes. Power down and lock out the air handler or furnace before connecting or modifying any duct section. 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 drawband and mastic or UL 181B-listed tape as required by local code.

Technical Specifications

• Diameter: 12 inches
• Length: 25 feet
• Insulation R-Value: R-8
• UL Listing: UL 181, Class 1
• Outer Jacket Material: Tri-directional fiberglass scrim reinforced metallized polyester
• Package Length: 29 inches
• Package Width: 17 inches
• Package Height: 17 inches
• Weight: 23.93 pounds

Standard Information

• Brand: ATCO RUBBER PRODUCTS
• Manufacturer Part Number: FD-12X25-R8FB