Kingsman Flue Adaptor Kit for 2" to 3" Increaser and 6" to 7" Increaser

The Kingsman I23FAK Flue Adapter Kit lets you vent the IDV24 direct vent fireplace insert with 2"/3" flex liners when the venting must pass through a 6-inch chimney.

Features

• Includes two 2" to 3" adapters and one 6" to 7" adapter
• For use with the IDV24 Series Direct Vent Fireplace Insert
• Use with the I23FK25 flex pipe kit (one 2" and one 3" liner, 25' each) and the IDVVT36 vertical termination, sold separately
• With 2"/3" venting, the IDV24 manual lists a 12 ft minimum and 25 ft maximum vent height

Fits These Kingsman Models

Kingsman lists this part for the following models in its 2026 order guide. Check your appliance’s model number on its rating plate before ordering.

• 24" IDV24 Direct Vent Gas Fireplace Insert

Resources

• IDV24 Installation & Owner's Manual (PDF)
• Kingsman 2025 Product Guide (PDF)