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Green Mountain 40 8640
Warm your living area with a clean, efficient, long-lasting fire in a clean-traditional Green Mountain wood stove. Clean Traditional Cast Iron Our GM40 wood stove is styled with clean lines and offered in traditional black cast iron. Built...

Green Mountain 40 8640As shown
Configure, Price & Visualize
Verified Estimate answers a few fit questions so the price uses the exact vent kit and install add-ons the space needs. The most accurate number.
Quick Estimate uses the simplest vent kit and a baseline install. A fast starting number, no questions.
Visualizer shows this unit rendered in a photo of the room before anything is decided.
Product Configuration
The unit, the venting it needs, and installation by the team that supplied it, priced right on this page.
This one prices person-to-person. Stop by one of our showrooms or send us your measurements, and we’ll work out the exact build and write your estimate.
Available at our Erlanger showrooms · SKU 8640-0010
Basic Product Info
Approx. Heating Area
700-1,400
Fan Kit
Optional Up to 16 inches
More Product Info
Warm your living area with a clean, efficient, long-lasting fire in a clean-traditional Green Mountain wood stove. 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.
Manuals & Spec Sheets
Documentation for this model is available on request.
Common Product Questions
Can I get an instant online estimate for the Green Mountain 40 8640 in Northern Kentucky?
Yes. Tate Builders Supply prices the Green Mountain 40 8640 right on this page—the unit, the venting it needs, and installation by our own team—in about two minutes, free and with no obligation.
What does the estimate include, just the unit?
Everything it takes to get it burning: the Green Mountain 40 8640 itself, the venting it needs, and installation by our own team, because we install what we sell. Get the number here, then schedule an appointment to confirm it.
Is the online price real, or just a rough guess?
It’s a real, configured estimate from the live catalog, not a vague range. Choose your options above and the number follows that exact build.
Who installs and services the Green Mountain 40 8640?
We do. We install what we sell, and the same team services it afterward. Your appointment confirms the venting, clearances, and gas line before anything is ordered.
Shop the Series, Not the Model
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