Excalibur® EX-U31 Medium Gas Insert

Update your ordinary masonry fireplace with the gentle arch of an Excalibur. Heat medium sized living areas in a wide range of styles with this fireplace insert.  Whatever style you choose, Regency quality and the exceptional fire will be a welcome addition to your home.

Backed by the industry’s most comprehensive Limited Lifetime Warranty.

How it Looks:

  • Efficient upgrade to keep the heat in your home
  • Fully functional optional double doors recreates the ambiance of a real wood fire
  • Heat radiating ceramic glass provides maximum viewing area
  • Realistic logs with beautiful flames and platinum infused bright embers
  • Arched surround provides timeless styling


How it Works:

  • Controllable heat with up to 50% flame turn down
  • Easy access waist height controls
  • Whisper quiet variable speed blower to push the heat
  • B-vent application is ideal for older homes
  • Operates on natural gas or propane




specifications: true
btu: Natural Gas: 30,000 (max) / 20,600 (turn down); Liquid Propane: 27,500 (max) / 22,000 (turn down)
energy efficiency: Natural Gas: 76.00% (52.90% EnerGuide rating); Liquid Propane: 76.00% (48.07% EnerGuide rating)
glass size: 361 sq. in.
diverter valves: Medium size room
dimensions: Width (front) 29"; Width (back) 22.5"; Height 21"; Depth 16"
Please Note: Heating Area varies with climate and home efficiency/insulation.

Have questions or need more information?

Our friendly staff can help answer and questions you may have about our services or products.

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