Deflecto FLS-0325 Flexible Metallic Duct 3 in 25 Ft

Product Description

The DEFLECTO FLS-0325 is a flexible metallic duct section constructed from aluminum, measuring 3 inches in diameter and 25 feet in length. Flexible metallic duct is a core component in residential and light commercial HVAC installations, used to connect rigid ductwork to diffusers, grilles, and air handlers where a rigid connection is impractical. The aluminum construction provides durability and resistance to moisture, making it suitable for supply and return air applications in conditioned spaces. HVAC technicians and sheet metal contractors install this product as part of forced-air distribution systems.

This flexible duct section is used in residential heating, cooling, and ventilation systems where a 3-inch diameter connection is required. Common applications include branch runs from a plenum or trunk line to individual supply outlets, as well as connections to bathroom exhaust fans and range hood venting where flexible metal duct is code-approved. The 25-foot length provides enough material to complete multiple short branch runs or a single longer run without splicing.

Key Features

• 3-inch diameter for standard branch duct connections and exhaust fan terminations
• 25-foot length reduces the need for couplings or splicing on longer runs
• Aluminum construction resists corrosion and moisture in conditioned and semi-conditioned spaces
• Flexible design allows routing around framing members and obstructions without rigid fittings
• Metallic construction meets code requirements where non-metallic duct is not permitted

Compatibility

Designed as an OEM-style flexible duct section suitable for 3-inch diameter HVAC branch runs, exhaust fan connections, and ventilation applications in residential and light commercial forced-air systems.

Installation Notes

Installation is typically performed by licensed HVAC technicians or sheet metal contractors following local mechanical codes and ASHRAE duct design guidelines. Power down the air handling unit before connecting or disconnecting duct sections. Secure each end with an approved draw band or worm-gear clamp and seal with listed foil tape or mastic sealant. Avoid sharp bends or excessive compression of the duct, as both reduce airflow and system efficiency.

Technical Specifications

• Diameter: 3 inches
• Length: 25 feet
• Material: Aluminum
• Duct Type: Flexible Metallic

Standard Information

• Brand: DEFLECTO
• Manufacturer Part Number: FLS-0325