Enameled cast iron
The flush cast iron front of the GMI 90 is available in matte black or our brown enamel finish.
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.
BTU: Up to 80,000
Efficiency: 64% HHV
EPA Certified: 1.22
Finish: Brown Enamel, Matte Black
Firebox Capacity: 2.5 cu ft
Flue Exit Diameter: 6
Flue Exit Location: Top
Heats up to: 2,200
Maximum Log Length: 20″
Stove Type: Wood Fireplace Insert
Steel Surround: 94-5960010
Surround Extension: 94-5960110
Outside Air Adapter Kit: 94-53500
Fire Screen Insert: 94-69110
Linear Hook-Up Collar: 94-67500
Mantel Shield: 94-79700
Offset Liner Adapter: 5700-007
To combustible mantel from bottom of insert: 40-3/4”
To side trim from side of insert body: 9-1/2”
To side wall from side of insert body: 19”
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.
Steel Surround, GMI-90
Steel surround, 3-piece assembly.
Surround Extension, GMI-90
The surround extension is installed between the cast iron faceplate and the steel surround, reducing the hearth depth required to install the fireplace insert.
Outside Air Adapter, GMI-90
Connect an outside air source directly to your fireplace insert. Recommended for air tight homes. 5 inch flexible pipe not included.
Fire Screen, GMI-90
The Fire Screen allows the user to burn the fireplace with the door open to enjoy the direct fire.
The mantel shield attaches to bottom of a combustible mantel to reduce clearances per NFPA 211 standards. Attach to the mantel with screws and ceramic spacers. 48 inches wide. It can be cut to fit specific installations.
Liner Hook-Up Starter Collar
The Liner Hook-Up Starter Collar connects to your chimney liner before you install the insert in the fireplace. It can then be easily and safely secured to the insert after the insert is placed in the fireplace, making the whole installation process easier.
Offset Liner Adapter
The offset adapter moves the connection point between the insert and the chimney liner up to 6 inches back.