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Good things come in small packages! The Napoleon Infrared™ X3 Gas Fireplace Insert offer a modulating dual burner system that results in a firebox filled with a stunning triple flame pattern. Napoleon’s Infrared™ X3 is a deluxe, direct vent infrared gas insert which offers many standard features including a thermostatic remote and an exclusive NIGHT LIGHT™ that radiates a warm glow throughout the room, even when the fireplace is off. The perfect solution for replacing an inefficient masonry or prefabricated fireplace.

Infrared Gas Burning Insert Brochure

Note--This unit ships for use with Natural Gas, to convert to Propane, you must order the XIR3 LP Conversion Kit.


  • For use within a masonry fireplace
  • Includes full function Proflame remote control
  • Exclusive dual burner system allows for full modulation of both front and rear burners from 15,000 up to 31,000 BTU’s
  • Front burner can be modulated independently from 15,000 to 24,000 BTU’s
  • Fuel saving electronic ignition with battery back-up
  • Back-up control system ensures reliable use, even during power failures
  • Clean face design with a 364 sq. in. viewing area
  • Must order your choice of safety screen to complete the unit
  • IRONWOOD Log Set and heat radiating ceramic glass come standard
  • ACS – anti condensation switch comes as standard (standing or intermittent pilot)
  • Optional decorative accessories available
  • Optional blower available
  • Exclusive NIGHT LIGHT comes standard
  • Thermostatic remote control comes standard
  • Natural Gas or Propane

Napoleon Infrared Direct Vent Deluxe Gas Fireplace Insert with Logs | XIR3NSB | Technical Details


Product Details

Fuel Type: Gas
Vent Type: Direct Vent
Vent Size: 3
Ignition Type: Millivolt
Installation Type: Insert
Style: Traditional
Model: Natural Gas (NG) Propane (LP)
Max. (BTU/HR): 31,000 BTU's 31,000 BTU's
Min. (BTU/HR): 24,800 BTU's 24,800 BTU's
Napoleon Infrared Direct Vent Deluxe Gas Fireplace Insert with Logs | XIR3NSB | Dimensions


Actual Dimensions

Height Width Depth
21" 295/8" 171/2"

Technical Drawings

For more detail please see the Installation Manual

XIR3N Technical Drawing 1
XIR3N Technical Drawing 2


Why do I need to purchase a door and surround at additional cost?

The XIR3 insert is designed with options to fit your particular style. The additional cost is due to the different styles, sizes and finishes of the doors and surrounds. Additional options not shown here are available on the IR3 Accessories Page. Please call for additional information and custom surrounds.

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.

How is this fireplace vented?

The XIR3 insert uses a 3" exhaust and a 3" intake. Since an insert is installed in a masonry fireplace, the 3" aluminum liners are typically dropped down the chimney. We recommend the DuraVent Co-linear Vent Kit. Of course, if you need any assistance in determining which type of venting is best for your situation, give us a call (844)635-5499.

What's the difference between an insert and a fireplace?

In the hearth industry, we refer to an insert as a fireplace that is being installed within an existing masonry fireplace. These units are designed to get hot, therefore they wouldn't be safe installed in a wall opening. A direct vent fireplace, or zero clearance fireplace has additional insulation and heat protection to allow it to be installed close to combustible materials such as wood, they are generally larger in size that inserts.

How do I know if my existing fireplace is big enough?

The minimum firebox opening needed is shown in the images above (21 1/2"H x 29"W x 13 1/2"D). When choosing your surround size we generally aim for at least a half inch of overlap on the sides and top.

Have a different question? Give us a call, email or chat.

Questions & Answers

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  • My firebox is not masonry but a metal box. would it be safe with your vent free gas inserts

    If your firebox is rated as a wood burning firebox, then it is safe to install a gas insert.  Most fireboxes are too small to install a gas insert into.  In general a metal firebox is best suited for a gas log set vented or vent free, depending on what type of firebox you have.  Thanks for your question!