
Elbows
- 4" aluminum 90° directional elbow
- Fits industrial ventilation & dust systems
- Multiple shipping options available
SMACNA Compliant Fabrication
ASHRAE Standards Aligned
Duct Incorporated's 4-inch aluminum 90-degree elbows are precision-fabricated fittings designed for seamless direction changes in industrial ventilation, dust collection, and material handling duct systems. Built for durability and airtight performance, these elbows integrate easily with standard 4-inch duct configurations across a wide range of industrial applications.


90-degree elbows are available in several types including standard radius, long radius, short radius, and segmented designs. They can be fabricated from aluminum, galvanized steel, or stainless steel. Each type suits different airflow requirements — long radius elbows minimize pressure drop, while short radius elbows fit tight spaces. Material and gauge selection depends on the application, such as dust collection or ventilation.
Talk to our experts for custom solutions and tailored guidance.

Used in factory ventilation and exhaust systems to route airflow efficiently around structural obstacles.

Critical component in dust collection networks, directing particulate-laden air through collection equipment.

Installed in commercial building HVAC systems to change duct direction with minimal airflow resistance.

Integrated into pneumatic conveying and material handling duct lines for smooth directional transitions.
Talk to our experts for custom solutions and tailored guidance.
Each 4-inch elbow is manufactured to exact tolerances, ensuring airtight connections and consistent airflow performance across your duct system.
Choose from Ground, 2-Day, Overnight, or Early Morning Delivery to keep your project on schedule with minimal downtime.
Order directly online or get expert guidance by phone — making procurement of duct fittings simple, fast, and hassle-free.
Submit your requirements and our team will respond promptly with pricing, availability, and technical guidance tailored to your application.
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