Mueller Streamline 17002516h Flex Duct 16in X 25ft R-4.2

Product Description

The MUELLER STREAMLINE 17002516h is a 16-inch diameter insulated flexible duct supplied in a 25-foot length with a gray outer jacket. It is designed for air distribution in residential and light commercial HVAC systems where flexible routing is required between rigid ductwork, air handlers, and diffusers. The core is constructed from double-ply black polyester, and the assembly carries an R-4.2 insulation value to limit thermal loss and reduce condensation risk in unconditioned spaces. Licensed HVAC technicians install this duct type during new construction and retrofit projects.

This flex duct is suited for HVAC air distribution applications where rigid metal duct is impractical due to framing constraints, tight ceiling cavities, or short branch runs to registers. The gray outer jacket provides durability and a clean appearance in exposed utility spaces. The 25-foot length allows a single run to serve most standard branch duct scenarios without splicing, reducing potential leak points in the system.

Key Features

• 16-inch inner diameter accommodates high-volume airflow branch runs
• 25-foot length minimizes the need for mid-run connections
• R-4.2 insulation value reduces thermal loss in unconditioned attics and crawlspaces
• Double-ply black polyester core resists tearing and maintains shape under normal static pressure
• Gray outer jacket provides UV and abrasion resistance in typical installation environments
• Boxed packaging protects the duct from compression and damage during transport and storage

Compatibility

Designed as an OEM-style flexible duct for residential and light commercial HVAC air distribution systems requiring a 16-inch diameter venting application.

Installation Notes

Installation should be performed by a licensed HVAC technician in accordance with SMACNA guidelines and local mechanical codes. Power down the air handling unit and confirm the system is de-energized before connecting or disconnecting ductwork. Flex duct should be fully extended and supported at proper intervals to avoid sagging, which restricts airflow and reduces system efficiency. Secure all connections with approved clamps and mastic or UL 181-rated tape — do not use standard cloth duct tape.

Technical Specifications

• Diameter: 16 inches
• Length: 25 feet
• Insulation Value: R-4.2
• Core Type: Double Ply Black Polyester
• Material: Polyester
• Application: HVAC
• Type: Venting
• Packaging: Boxed

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: 17002516h