HearthStone Green Mountain 40

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HearthStone Green Mountain 40

Clean Traditional Cast Iron
Our GM40 wood stove is styled with clean lines and offered in traditional black cast iron. Built for the wood stove purist.

TruHybrid Reliability
Our Green Mountain stoves exceed EPA clean burning standards. You can be sure they will burn clean today and for many years to come.

Soapstone Firebox Lining
The GM40 is lined with soapstone blocks. Soapstone absorbs the heat of the fire to give you long-lasting comfortable heat.

Additional Information


BTU: Up to 40,000

Efficiency: 79%

EPA Certified: 1.07 g/hr

Finish: Matte Black

Firebox Capacity: 1.32 cu ft

Flue Exit Diameter: 6

Flue Exit Location: Top

HeatLife: 20 Hours of heat

Heats up to: 1,400 sq ft

Maximum Log Length: 16″

Model: 8640

Stove Type: Green Mountain Wood Stove

Weight: 350

Blower with Rear Heat Shield: 96-57400

Outside Air Adapter: 96-53400


Side: 14″
Rear: 15 ½”
Corner: 14″
Single-wall connector pipe, no rear heat shield
Side: 14″
Rear: 13 ¾”
Corner: 7″
Single-wall connector pipe with included rear heat shield
Side: 14″
Rear: 9 ¾”
Corner: 7″
Double-wall connector pipe with blower kit heat shield


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