Builders Best 110643 4 Inches X 5 Foot Rigid Aluminum 26GA Duct 15 Per Case

Product Description

The Builders Best 110643 is a 4 inches by 5 foot rigid aluminum duct section designed for residential and light commercial ventilation applications. Constructed from 26-gauge aluminum, this duct provides a strong, durable airflow passage that holds its shape under normal HVAC and exhaust system conditions. It is sold in cases of 15 sections, making it a practical choice for contractors, HVAC technicians, and plumbers who need a reliable supply of rigid duct on hand for multiple jobs or larger installations.

Rigid aluminum duct is a preferred material for in-wall duct runs, dryer exhaust systems, bathroom exhaust fans, range hood venting, and other ventilation applications where a smooth interior surface is required. The smooth inner wall reduces airflow resistance compared to flexible duct, which helps maintain proper exhaust velocity and system efficiency. This is especially important for dryer venting, where lint accumulation in corrugated duct can create a fire hazard. Rigid duct minimizes that risk and meets most local and national building codes for concealed in-wall use.

The 110643 rigid aluminum duct sections are easy to cut, join, and seal with standard sheet metal tools, duct tape, or mastic sealant. At 4 inches in diameter, this duct size is compatible with most residential dryer vent connections, bathroom exhaust fans, and range hood outlets. The 26-gauge aluminum construction offers a balance of rigidity and workability, allowing installers to make clean cuts and secure connections without specialized equipment. Each 5 foot section is lightweight and easy to handle, speeding up installation on the job site.

• 26-gauge rigid aluminum construction for durable, code-compliant ventilation runs
• 4 inches diameter by 5 foot length per section, sold 15 sections per case
• Smooth interior surface reduces airflow resistance and lint buildup for safer dryer and exhaust venting

Product Highlights

The Builders Best 110643 rigid aluminum duct provides a code-compliant, smooth-wall ventilation solution in a contractor-friendly 15-per-case quantity. Its 4 inches diameter and 5 foot length make it a go-to choice for dryer exhaust, bathroom fan venting, and range hood installations.

Product Information

Standard Information

• Brand: BUILDERS BEST
• Manufacturer Part Number: 110643

Technical Specifications

• Diameter: 4 inches
• Length: 5 feet per section
• Material: Rigid aluminum
• Gauge: 26 GA
• Case Quantity: 15 sections
• Application: In-wall ventilation, dryer exhaust, bathroom exhaust, range hood venting