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

Lukjan 6" x 4" Smoke Pipe Duct Increaser/Reducer – Built for Precision and Durability

The Lukjan 6" x 4" Smoke Pipe Duct Increaser/Reducer is engineered to provide a reliable transition between different duct diameters while maintaining airflow efficiency. Manufactured for HVAC professionals, this fitting ensures accurate sizing, durability, and seamless integration into new or existing systems.

Key Features

• Galvanized Steel Construction: Fabricated from 28-gauge galvanized steel with G-30 lock-forming quality for strength and corrosion resistance.
• Consistent Fit: Machine-formed to ensure uniform dimensions across production runs, reducing installation adjustments.
• Optimized Airflow: Tapered design allows smooth air transitions, minimizing turbulence and pressure loss in the duct system.
• Non-Crimped Ends: Provides straightforward integration into round ductwork with mechanical fastening and sealing methods.
• Industry Standards: Produced in compliance with ASTM-A653 CS Type B specifications for HVAC applications.

Technical Specifications

• Material: Galvanized steel
• Diameter: 6" to 4"
• Length: 5 inches
• Gauge: 28GA
• Coating: G-30 lock-forming quality

Installation Notes

For best results, the Lukjan increaser/reducer should be installed by a licensed HVAC professional to ensure proper system balance and compliance with local codes. Secure all joints using sheet metal screws and seal with UL-rated duct sealant or tape to maintain system efficiency and prevent leakage. While manageable with standard sheet metal tools, precise measurement and sealing are critical for reliable performance.

Applications

For Contractors: Built to withstand demanding site conditions, this reducer saves time with its accurate dimensions and durable construction. Ideal for retrofits and new installations where airflow integrity is critical.

For Skilled Installers: Straightforward to integrate into residential or commercial duct runs. Careful alignment and sealing ensure optimal efficiency.

Performance You Can Rely On

The Lukjan 6" x 4" Smoke Pipe Duct Increaser/Reducer is a professional-grade fitting designed for long-term service, delivering secure transitions and efficient airflow management in HVAC systems of all sizes.