10" x 9" Smoke Pipe Duct Increaser/Reducer, Tapered, 26GA

Lukjan 10" x 9" Galvanized Smoke Pipe Duct Increaser/Reducer

The Lukjan 10" x 9" increaser/reducer is a precision-formed galvanized steel fitting designed for transitions between duct sizes in HVAC systems. Manufactured with lock-forming quality galvanized sheet steel, it provides a durable, code-compliant solution for air distribution systems where smooth diameter reduction is required.

Application

This fitting is intended for use in supply and return air duct systems in residential, commercial, and light industrial HVAC installations. The tapered reducer design minimizes static pressure losses and ensures uniform airflow performance during system operation.

Performance Characteristics

• Material: 26-gauge galvanized steel
• Nominal Sizes: 10" to 9"
• Length: 5 inches
• Coating: G-30 galvanized finish per ASTM-A653 CS Type B
• Design: Non-crimped tapered configuration

Installation Guidelines

Install according to SMACNA standards. Joints should be secured with mechanical fasteners and sealed with approved duct sealants or UL-listed tapes to ensure airtight performance. Proper alignment and support spacing per code are essential to prevent air leakage and maintain system efficiency.

Advantages

• Code Compliance: Meets ASTM-A653 material specifications for galvanized steel duct components.
• Durable Fabrication: Resistant to corrosion, deformation, and handling stresses.
• Efficient Airflow: Tapered design minimizes turbulence during duct transitions.
• Professional Grade: Manufactured for contractor use in both new construction and retrofit projects.

The Lukjan 10" x 9" smoke pipe duct increaser/reducer delivers dependable performance for HVAC applications requiring precise duct transitions. Its heavy-duty galvanized construction, accurate sizing, and standardized fabrication make it a reliable choice for mechanical contractors and engineers.