Hearthstone Green Mountain 40

Cast Iron + Soapstone

Lined with 1 1/4″ soapstone, our cast iron stoves provide a more comfortable heat than traditional cast iron wood stoves.

TryHybrid™ System

Our TruHybrid™ stoves burn cleanly and efficiently before and after you engage the catalyst, making the most of your wood pile.

Easy to Use

A single lever air control lets you control the fire. Open the catalyst control handle for smokeless startups. Close it for long, efficient burns.


Heating Capacity (sq ft): 1400 sq ft
Fire Capacity: 1.32 cu ft
Recommended Log Length: 16 inches
High Heating Value (Efficiency): 0.79
Emissions (Grams/hour): 1.07 Grams/hour
Weight: 350 lbs
For more information go to the manufacturer’s website.

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      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: 16 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: 16″
      • 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

      Additional information



      Fuel Type


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      Design Style

      Freestanding, Legs, Traditional

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      High Country Stoves & Fireplaces is committed to serving the families of southeastern Wyoming and north central Colorado with the best service, the best stoves, fireplaces, inserts, and hearth products. Let us help you devise the smartest strategy for improving the warmth and comfort of your home.

      Our Service Area is within a 100-mile radius around Laramie, including Albany, Carbon, Laramie, Platte & Goshen Counties in Southeastern Wyoming and Larimer County and Jackson County in North Central Colorado.

      Our Store Hours:

      Mon – Fri: 9:30 am to 6:00 pm
      Sat: 10:00 am to 3:00 pm
      Sun: CLOSED

      860 N 3rd St Laramie, WY 82072

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