3-1/4″ x 12″ x 6″ 90 Degree Stack Boot, Straight

The Lukjan Series 5 Straight Stack Boot provides a durable round-to-rectangular transition fitting for efficient HVAC airflow distribution.

This galvanized steel boot connects a 6 inch diameter round duct to a rectangular stack opening, measuring 3-1/4 inches wide with a 12 inch length.Engineered for strength and dimensional accuracy, it ensures smooth airflow transitions in residential, commercial, and light industrial HVAC systems.

• Series 5 Straight Stack Boot with 6 inch diameter round inlet.
• Rectangular outlet opening measures 3-1/4 inches wide.
• Overall boot length: 12 inches.
• Constructed from galvanized steel for durability and corrosion resistance.

Technical Data & Performance

• Product Type: HVAC duct transition fitting (round-to-rectangular).
• Manufacturer: Lukjan.
• Series: 5.
• Round Duct Size: 6 inch diameter.
• Rectangular Opening: 3-1/4 inch width.
• Length: 12 inches.
• Material: Galvanized steel with factory-formed seams for airtight performance.
• Applications: Residential, commercial, and industrial HVAC ductwork installations.