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

Lukjan 5" x 3" Smoke Pipe Duct Increaser/Reducer – Precision Fit for HVAC Systems

The Lukjan 5" x 3" Smoke Pipe Duct Increaser/Reducer provides a reliable transition between duct sizes while maintaining proper airflow balance in HVAC applications. Manufactured to meet industry standards, this fitting ensures consistent performance and long service life in both residential and commercial systems.

Key Features

• Heavy-Duty Galvanized Steel: Constructed from 28-gauge galvanized steel with a G-30 coating for corrosion resistance and structural integrity.
• Accurate Sizing: Machine-formed for uniform dimensions, reducing field modifications and ensuring dependable installations.
• Optimized Airflow: Tapered design minimizes turbulence and pressure loss across duct transitions.
• Non-Crimped Ends: Allows straightforward integration with standard duct systems using mechanical fasteners and sealants.
• ASTM Compliant: Manufactured to ASTM-A653 CS Type B specifications for HVAC use.

Technical Specifications

• Material: Galvanized steel
• Gauge: 28GA
• Coating: G-30 lock-forming quality
• Dimensions: 5" to 3" diameter transition
• Length: 5 inches

Installation Notes

For maximum efficiency and compliance with local mechanical codes, installation should be performed by a licensed HVAC professional. Secure joints using sheet metal screws and seal with UL-rated duct sealant or tape to prevent air leakage. While manageable with basic sheet metal tools, precision fitting is critical to system performance.

Applications

For Contractors: Built for jobsite reliability, this reducer ensures durable transitions and minimizes call-backs. Accurate sizing saves time on installations while maintaining airflow integrity.

For Skilled Installers: Straightforward to incorporate into duct runs for both retrofit and new construction projects. Correct alignment and sealing are key to achieving optimal results.

Performance Assurance

The Lukjan 5" x 3" Smoke Pipe Duct Increaser/Reducer delivers professional-grade performance with a balance of strength, consistency, and airflow efficiency, making it a dependable choice for demanding HVAC installations.