Our R6 (1.5") Duct Board Mixing Boxes come fully assembled and ready to install — saving you time on the job site. Each box is handcrafted in Port Charlotte, FL from premium fiberglass duct board, delivering excellent insulation, durability, and noise control. Built to meet professional HVAC standards, these mixing boxes provide efficient airflow and a clean, finished look for any system.
Available Sizes:
• 12" x 12" ID – 16" x 16" OD – 22"
• 14" x 14" ID – 18" x 18" OD – 22"
• 16" x 16" ID – 20" x 20" OD – 22"
Don't see the size you're looking for? Contact Plenums Made Easy for custom orders.
Ask about volume pricing!
