4" x 3" Smoke Pipe Duct Increaser/Reducer, Tapered, 26GA

Lukjan 4" x 3" Smoke Pipe Duct Increaser/Reducer – Professional HVAC Transition Fitting

The Lukjan 4" x 3" Smoke Pipe Duct Increaser/Reducer provides a precise and durable solution for transitioning between duct sizes in HVAC systems. Designed for both residential and light commercial applications, this fitting helps maintain airflow balance while ensuring long-term system efficiency.

Product Advantages

• Heavy-Duty Construction: Manufactured from galvanized steel for strength and corrosion resistance.
• Efficient Tapered Design: Smooth transition minimizes static pressure loss and maintains airflow velocity.
• Uniform Sizing: Machine-formed for dimensional accuracy, ensuring consistent fit and reliable performance.
• Code-Ready: Produced in compliance with ASTM-A653 CS Type B with G-30 coating for lock-forming quality.
• Wide Application: Suitable for duct adjustments in heating, cooling, and ventilation systems.

Technical Specifications

• Material: Galvanized steel
• Gauge: 26 ga
• Nominal Sizes: 4" to 3"
• Length: 5 inches
• Coating: G-30 lock-forming quality, ASTM-A653 CS Type B

Installation Notes

This reducer is designed for straightforward installation, but correct handling is essential for long-term performance. All connections should be mechanically fastened and sealed with approved materials to prevent leaks. Professional installation is recommended to ensure compliance with local building codes and to optimize system efficiency.

For Contractors

The Lukjan 4" x 3" Increaser/Reducer is built to meet professional job site requirements. Its consistent sizing and corrosion-resistant build reduce installation time and deliver reliable results on every project.

For Skilled Installers

Capable installers can integrate this fitting using basic sheet metal tools and fasteners. Accuracy in measurement and sealing is essential for maintaining airflow performance. For best results, a licensed HVAC contractor is recommended.

Dependable HVAC Component

With its rugged construction and precision fit, the Lukjan 4" x 3" Smoke Pipe Duct Increaser/Reducer ensures secure transitions and sustained airflow performance. Built for professional-grade applications, it supports both reliability and efficiency in your HVAC system.