Mueller Streamline 12MD Mobile Home Flex Duct R-4.2

Product Description

The MUELLER STREAMLINE 12MD is a flexible air distribution duct engineered specifically for manufactured and mobile home HVAC applications. Built with a 12-inch diameter and an R-4.2 insulation rating, this flex duct handles main supply runs where moderate thermal performance and routing flexibility are both required. Its construction allows installation in tight underfloor spaces and confined pathways typical of mobile and manufactured home construction. HVAC technicians and installers working in the manufactured housing segment rely on this product for dependable airflow distribution within constrained duct routing environments.

This flex duct is intended for use in manufactured and mobile home HVAC systems, primarily on main supply trunk runs where a 12-inch diameter provides adequate airflow capacity. The flexible design accommodates the angled and curved routing common under mobile home platforms. It is suited for residential manufactured housing installations where system design calls for moderate insulation performance and installation ease in underfloor cavities.

Key Features

• 12-inch diameter sized for main supply distribution runs in mobile home HVAC systems
• R-4.2 insulation rating delivers moderate thermal performance for underfloor environments
• Flexible construction allows routing around obstructions in confined underfloor spaces
• Designed specifically for manufactured and mobile home HVAC applications

Compatibility

Designed as an OEM-style replacement and new-installation flex duct for residential manufactured and mobile home HVAC air distribution systems requiring a 12-inch diameter supply duct.

Installation Notes

Installation should be performed by a qualified HVAC technician familiar with manufactured housing duct systems. Power down the HVAC unit and verify the system is off before connecting or repositioning any duct sections. Support the duct at regular intervals to prevent sagging, which reduces airflow efficiency. Seal all connections with approved mastic or metal-backed tape in accordance with applicable mechanical codes.

Technical Specifications

• Diameter: 12 inches
• Insulation R-Value: R-4.2
• Application: Manufactured and mobile home HVAC air distribution

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: 12MD