Our R6 (1.5") Duct Board Mixing Boxes are built for dependable airflow performance and ease of installation. Each box is precision-cut from high-quality fiberglass duct board to provide excellent thermal insulation and noise reduction. Designed with HVAC professionals in mind, these unassembled mixing boxes ship flat for convenient storage and transport — saving space on your truck and in your shop.
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!
