8" x 7" Smoke Pipe Duct Increaser/Reducer, Tapered, 26GA

Lukjan 8" x 7" Smoke Pipe Duct Increaser/Reducer – Professional HVAC Fitting

The Lukjan 8" x 7" Smoke Pipe Duct Increaser/Reducer is designed to provide a precise transition between duct sizes, maintaining airflow balance and system efficiency. Manufactured from galvanized steel with a protective G-30 coating, this fitting ensures long-term durability and reliable performance in heating and cooling applications.

Professional Advantages

Contractors rely on increasers and reducers to maintain proper static pressure and airflow when duct size changes are required. The Lukjan 8" x 7" fitting is built to jobsite standards, ensuring consistent performance and straightforward installation in residential or light commercial systems.

Key Features

• Airflow Stability: Tapered design allows smooth transition between 8" and 7" ducts, minimizing turbulence and efficiency loss.
• Galvanized Steel: Fabricated from 28-gauge galvanized steel with G-30 coating for added corrosion resistance.
• Precision Fit: Machine-formed to maintain dimensional accuracy, ensuring dependable field connections.
• Versatile Use: Suitable for residential and commercial duct systems requiring size adjustment.
• Durable Build: Designed to withstand frequent handling, fastening, and sealing in demanding HVAC environments.

Technical Specifications

• Transition Size: 8" to 7"
• Length: 5 inches
• Material: Galvanized steel, 28GA
• Coating: G-30 per ASTM-A653 CS Type B
• Type: Non-crimped, tapered reducer/increaser

Installation Notes

For best results, installation should be handled by a licensed HVAC professional to ensure compliance with codes and system design. Secure the fitting with sheet metal screws and seal all joints with approved mastic or UL-listed foil tape to prevent leakage and maintain system efficiency. While simple in design, accuracy in installation is essential for long-term performance.

Contractor Focus

The Lukjan 8" x 7" Smoke Pipe Duct Increaser/Reducer delivers the consistency and durability expected on professional job sites. With its corrosion-resistant finish and precise fit, it provides a dependable solution for transitioning duct sizes without compromising airflow or efficiency.