The only way to add the chimney extension to your fireplace is at the time of purchase. You can add up to two feet to increase the height of your chimney. You can always extend the chimney in 4" increments. See the instructions for everything included in the kit.
Fremont shown with 8" chimney extension
4" chimney extension
8" chimney extension
12" chimney extension
Our kits come in three stone-look colors
Need a taller fireplace? Order your Chimney extension kit and get up to 12" added to your chimney height. The kit is very simple to build. Though our Fremont fireplace has great draft, this will also have the added benefit of improving the draft of your fireplace.