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Ideal for modern and contemporary rooms, Napoleon's Plazmafire 31 features easy installation and all of the conveniences of a direct vent gas fireplace. Virtually endless installation possibilities and almost as easy as hanging a picture on the wall. With an impressive 30" x 15" viewing area, 20,000 BTU's, exclusive Topaz CRYSTALINE ember bed and slate brick panels, Napoleon's Plazmafire is a great addition to Napoleon's modern fireplace collection and to any room in your home.

Wall Hanging Gas Fireplace Brochure


  • See all available accessories here
  • Clean, contemporary design combined with fuel saving electronic ignition
  • 20" rigid 4"x7" venting included with unit (used for venting through exterior wall) order the horizontal GD-222 to complete
  • Back-up control system ensures reliable use, even during power failures
  • Safety Screen Included
  • A surround is required to complete the installation
  • Optional LED light kit (two), complete with switch and wiring harness
  • Certified for bedrooms, bathrooms and mobile homes
  • Natural gas or propane
Napoleon Plazmafire 31 Wall Hanging Linear Gas Fireplace | WHD31NSB | Technical Details


Product Details

Fuel Type: Gas
Vent Type: Direct Vent
Vent Size: 4x7
Ignition Type: Electronic
Installation Type: Zero Clearance
Style: Linear
Vent Inner Diameter: 4 Inches
Vent Outer Diameter: 7 Inches
Weight: 112 lbs.
Model: Natural Gas (NG) Propane (LP)
Max. (BTU/HR): 20,000 BTU's 16,000 BTU's
Min. (BTU/HR): 17,800 BTU's 11,100 BTU's
Napoleon Plazmafire 31 Wall Hanging Linear Gas Fireplace | WHD31NSB | Dimensions


Actual Dimensions

Height Width Depth
convex - 287/16 | rectangular - 28" convex - 483/8 | rectangular - 435/16" convex - 101/2 | rectangular - 87/16"

Framing Dimensions

Height Width Depth
convex - 287/16 | rectangular - 28" 5011/16" 38"

Technical Drawings

For more detail please see the Installation Manual

WHD31 Technical Drawing 1
WHD31 Technical Drawing 2


1. Why do I need to purchase a surround at additional cost?

The surround finishes the fireplace and also includes a safety barrier to prevent accidental burns. There is an additional cost due to the wide range of materials used for different options.

2. How will the fireplace be delivered? Will the delivery driver bring it into my house?

All fireplaces are delivered via freight (tractor trailer truck) to the specified street address you provide us, we do provide free lift gate service with all freight deliveries. The delivery driver is only responsible for unloading the items from the truck, not to move them anywhere. For more information on the delivery process visit our FAQ page.

3. The picture shows a slate panel, is that included?

Yes, the Plazmafire comes complete with the slate panel and topaz glass embers.

4. How is the fireplace vented?

The Plazmafire includes a 20" section of 4x7 rigid vent which is used to vent horizontally through an exterior wall, you will need to order the GD-222 in order to complete this type of venting system. You can find the additional venting components here. If you need help designing the venting system let us know with an email or a phone call and we can assemble a custom solution for your situation.

Questions & Answers

Ask a Question
  • How many sqft would this heat?

    In theory, it could heat 800-1000 sq ft.  But that depends on the building, windows, insulation, climate and more.  Thanks for your question!

  • What is the recommended height?

    That depends where it's most likely to be viewed from.  If the fireplace is in a sitting area you may want it lower down with the flames about coffee table height.  If it's in a place where it may be viewed while standing you might raise it up with the flames around desk height.  Thanks for your question!

  • Napoleon Plazmafire WHD31NSB Wall Hanging Linear Gas Fireplace do u offer a fan blower for this.. or do u have any fireglass nat gas fireplaces with blowers? do u have tech support? i converted a directvent nat gas logs to a fireglass using an h-pipe and am having issues !! imagine that..

    There is no blower available for the WHD31NSB.  There are a number of natural gas, direct vent fireplaces with blowers, but not in a wall hanging version like the Plazmafire, in a built in direct vent fireplace, like the Boulevard contemporary 41 gas fireplace.  We do have tech support for our customers.  Thanks for your question!

Warning CA residents-Prop 65