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Height Extension Kit for Masonry Fireplaces

Height Extension-1With the exception of Rumford, FireRock units come standard with a 34.5″ opening height. FireRock’s Height Extension Kit can be used to increase the firebox’s finished opening by almost nine inches. This accessory is perfect for designs that call for an arched opening that would normally reduce the open area of the firebox.


  • Overall height: 8 5/8"
  • Width: varies by firebox size
  • Three piece unit that includes 2 side blocks and 1 back block
  • Treat as another course at installation
  • This accessory may not be used with LiteRock or See-Through models

Important: Please consult local building codes for specifics regarding any masonry fireplace application.

Click to View Other Masonry Fireplace Accessories:

Installation Kits  |  Firebrick & Mortar  |  Outside Air Kit  |   Solid Chimney Block   |  Chimney Pots

Offset Blocks   |   Metal Chimney System   |   Brick Flange  

Not sure what direction you want to take with your next project? Contact us to learn from our experts.

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