Increase the depth of your Stone Age outdoor fireplace with this Firebox Extension Kit. This kit adds 11 ½ inches to the depth of the firebox, perfect for creating a more substantial look, accommodating thicker wall finishes, or achieving a custom design.

Like the main fireplace kits, this extension is made from solid concrete panels, ensuring a durable, seamless, and heat-resistant construction that is ready for veneer. Choose the extension that matches your specific Stone Age fireplace model (36″ or 48″, Single Sided or See-Thru).

Available Models

• 36″ Single Sided Firebox Extension
• 36″ See Thru Firebox Extension
• 48″ Single Sided Firebox Extension
• 48″ See Thru Firebox Extension

Key Features

• Increases Firebox Depth: Adds 11 ½ inches to the depth of your fireplace.
• Solid Concrete Construction: Made from the same durable, heat-resistant material as the fireplace kits.
• Seamless Integration: Designed to integrate perfectly with Stone Age fireplace kits.
• Veneer-Ready: Can be finished with veneer to match the rest of your fireplace.

Specifications

• Brand: Stone Age Manufacturing
• Product: Firebox Extension
• Extension Depth: 11 ½”

Note: This is a firebox extension kit only. The main fireplace kit, mortar, firebrick, and other components are sold separately.