The Universal Triple 4-Inch Weld-On Damper Box is designed for builders who want dependable airflow control and long-lasting durability in their smoker or firebox projects. Because temperature management is one of the most important parts of any cook, this Universal damper box gives you the ability to fine‑tune airflow with confidence. It is built for fabricators, pit builders, and anyone who wants a professional-grade component that performs consistently.

This Universal damper box is fabricated from 1/8″ steel, which means it can withstand repeated high heat without warping or failing. As a result, it is an excellent choice for both backyard builds and commercial smoker projects. Additionally, the raw steel finish allows you to weld, grind, paint, powder coat, or season the damper box exactly the way you want, making it easy to integrate into any custom fabrication workflow.

With three 4-inch round dampers, you gain smooth and predictable airflow control. Each damper opens and closes cleanly, allowing you to adjust burn rate and temperature throughout your cook. Furthermore, you can choose between two damper patterns. The Regular Pattern offers classic straight-cut airflow slots, while the Swirl Pattern provides a more stylized look with curved channels. Both options are engineered for reliable performance, so you can select the style that best fits your build.

Because this is a Universal weld-on component, it works well with offset smokers, fireboxes, and a wide range of custom BBQ builds. Whether you are building a new smoker from scratch or upgrading an existing pit, this damper box adds strength, precision, and professional functionality. Moreover, its compact size makes it easy to position and weld into place without interfering with other components.

Overall, the Universal Triple 4-Inch Damper Box is a durable, heavy-duty solution for anyone who wants better airflow control and a cleaner, more efficient smoker. It combines rugged construction with smooth operation, giving you a dependable upgrade that enhances both performance and build quality.

Product Highlights

Universal weld‑on design
Triple 4″ round dampers
Regular or Swirl pattern options
Made from 1/8″ steel
Smooth, controlled airflow
Ideal for custom smokers and fireboxes
Raw steel finish for your preferred final coating

Specifications

Dimensions: 13.25″ L × 4.25″ W × 1″ D
Material: 1/8″ steel
Weight: 3 lbs 8 oz
Damper Size: Three 4″ round dampers
Mounting Style: Weld‑on
Finish: Raw steel

smoker modification

Triple 4″ Damper Box – Universal – Weld On – Regular/Swirl

Built in Wisconsin for serious outdoor cooking.