Residential Gas Fireplaces Inserts I-Series by Montigo Fireplace

The I Series by Montigo is a high efficiency single-sided gas fireplace insert series with two size options. The I Series features a classic, square firebox shape with an oversize metal surround designed to clad and conceal the edges of your old masonry fireplace opening. If your existing masonry fireplace opening is arched, or any variation on the standard square firebox design, this is the perfect insert for you. The I Series boasts 77-81% efficiency ratings. You can choose from linear or log grate burner styles, with interior media options of ceramic logs, river rock and fireglass.


  • Designed for installation into an existing masonry woodburning fireplace, enabling woodburning to gas conversion
  • Hidden standing pilot operation
  • 77-81% efficiency ratings
  • Optional high output variable fans
  • Firebed accent lighting
  • Oversize satin black metal surround will conceal edges of masonry fireplace opening
  • 30FID metal surround measurements are 43-1/2″ wide x 27-5/8″ high
  • 34FID metal surround measurements are 46-1/2″ wide x 30-7/8″ high
  • Choose from classic log grate and contemporary linear burner styles
  • Safety barrier screen is included**
  • Cool-Pak Glass (cool glass barrier) compatible
  • Ceramic log, river rock and fireglass interior media options