R6 Duct Box, Triangle Mixing, Pre-Assembled, Large

This triangle mixing box is designed to combine multiple airflow paths into a single duct run while maintaining smooth airflow transitions. Ideal for tight spaces and custom duct layouts where standard fittings won’t work.

Built from Type 800 ductboard with R6 insulation, this fitting is shop-fabricated for durability, airflow efficiency, and reduced field labor.

Applications:

• Mixing two air streams into one trunk

• Tight mechanical room layouts

• Custom duct transitions where space is limited

Features:

• Pre-assembled – ready for install

• R6 insulated ductboard construction

• Sealed seams for minimal air leakage

• Lightweight and easy to handle in the field

Customization:

• Built to your required dimensions

• Specify inlet and outlet sizes at checkout

Need help sizing or laying this out?

📩 Send your plans and we’ll build it to spec.