Fireplace Firebox Extension Kit

Increase the height of your firebox and fireplace simultaneously!  This extension is popular with our Contractor and Standard kits. Each fireplace opening flue extension adds 11” of height to the firebox and overall unit. 

The Fireplace Firebox Extension kit will elevate the overall height of your fireplace kit while create a more robust looking firebox. By using this kit, you do not sacrifice the great design you expect from the Stone Age line. These pieces are meant to perfectly match up with the Contractor and Standard Kits and create for a seamless integration. 

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Installation Guides

The installation guides are located below. If you need guides for other products, please head over to our resources page!

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