Flush cast iron design
The cast iron front of the GMi70 is designed to fit flush with your hearth for a clean and elegant look.
Burn up to 20 inch logs in the soapstone lined firebox. Soapstone retains the maximum heat from you fire and radiates steady warmth as your insert burns.
Our non-catalytic wood insert is easy to use. A single lever air control lets you burn hot and fast or low and slow to keep warm through the night.
Hours of heat
BTU: Up to 70,000
Efficiency: 69% HHV
EPA Certified: 1.54 g/hr
Finish: Matte Black, Brown Enamel
Firebox Capacity: 2.4 cu ft
Flue Exit Diameter: 6
Flue Exit Location: Top
HeatLife: 10 Hours of heat
Heats up to: 2,000 sq ft
Maximum Log Length: 20″
Stove Type: Wood Fireplace Insert
Steel Surround: 94-5950110
Surround Lower Panel: 94-5950519
Surround Extension: 94-5950010
Outside Air Adapter Kit: 94-53500
Fire Screen Insert: 94-59500
Linear Hook-Up Collar: 94-67500
To combustible mantel from bottom of insert: 50”
To side trim from side of insert body: 9”
To side wall from side of insert body: 16”
Each HearthStone is handcrafted using a combination of precision-made components in cast iron, soapstone, steel, ceramic, and various other materials. Our commitment to quality and attention to detail ensures that your product will serve you faithfully for years to come.
Soapstone is a natural material that absorbs the high heat of a fire, then radiates a gentle heat into the room. Soapstone warms the objects in your home, not just the air, resulting in a comfortable, livable heat.
Using selected raw and recycled material, our iron parts are produced in our foundry in Spain. Our modern casting facility guarantees durable, reliable, high-quality cast iron parts.
High-quality steel components are formed using the most modern processes available to achieve the highest level of fit and finish.