3-1/4" x 10" x 7" 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 7 inch diameter round duct to a rectangular stack opening measuring 3-1/4 inches wide, with a 10 inch length for stable installation. Designed for strength and dimensional accuracy, it ensures smooth airflow transitions in residential, commercial, and light industrial duct systems.

• Series 5 Straight Stack Boot with 7 inch diameter round inlet.
• Rectangular outlet opening width: 3-1/4 inches.
• Overall boot length: 10 inches.
• Constructed from galvanized steel for long-lasting durability and corrosion resistance.

Technical Data & Performance

• Product Type: HVAC duct transition fitting (round-to-rectangular).
• Manufacturer: Lukjan.
• Series: 5.
• Round Duct Size: 7 inch diameter.
• Rectangular Opening: 3-1/4 inch width.
• Length: 10 inches.
• Material: Galvanized steel with factory-formed seams for airtight performance.
• Applications: Residential, commercial, and light industrial HVAC ductwork installations.