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The World's Most Efficient and Versatile Fireplace Insert

Note: All direct-vent gas fireplaces manufactured after January 1, 2015, must be installed with a fireplace barrier to prevent accidentally touching the hot glass. Your Mantis Insert must be installed with a barrier. 

Manits Fireplace Insert Package with Matte Black Surround (FIK28).


Green Earth Preferred

Unmatched efficiency, Hot Suface Ignition, clean-burn technology, low-temperature exhaust, state-of-the-art digital controls, and automatic home humidification all combine to make this one of our Green Earth Preferred products.

Share the Beauty of Your New Fireplace & Enter to Win $500

Empire's Excellence in Design Award is open to homeowners who install an eligible fireplace between January 1 and December 31, 2015, and submit a completed entry form by January 31, 2016.  for rules and entry form.

Eligible Indoor Products: Boulevard Fireplace, Chateau Fireplace, Mantis Fireplace, Loft Fireplace and Loft Burner (installed in a firebox or fireplace)

2015 Excellence in Design Winner

Congratulations to Karen Randall of Clarkston, Michigan, winner of our 2015 Excellence in Desgn Award. Karen, with the help of Ace Fireplace, installed a Loft Vent-Free burner in her existing fireplace.

"The Moroccan style Fez surround is a cast stone reproduction from William Randolph Hearst's famous castle located in San Simeon, CA. My original oil paintings of belly dancers flank each side of the fireplace. The Moroccan designed room is accentuated by the iridescent Aurora Borealis glass glistening as the flames dance in the sleek design of the Loft burner."

–Karen Randall


Mantis Insert

Control Options


Mantis Traditional Insert Packages include a Thermostat Remote.  

Included - FRBTC Remote Control with Thermostat

Optional - FRBTP Programmable Remote Control


Surround Options for Mantis Inserts

Mantis Bay Window with Surround
Mantis Fireplace with Insert Surround - 38-inch

Mantis Fireplace with Mantel Surround - 35-inch


Mantel Colors

Mantels shown with other Empire Fireplace products.  Empire's Standard Full Mantels (EMBF9) and Standard Corner Mantels (EMBC9) fit Mantis.  Profile Mantels also fit, but do not include tile surround.

Dark Oak


Unfinished Hardwood
Unfinished Oak


Fireplace Screens

Available for Fireplace Mantis and Bay Window Mantis

See Owner's Manual for Venting Terminations and Accessories

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