Ruby series gas inserts make relaxing simple. Convert your high-maintenance wood fireplace into a source of warmth and enjoyment. Strikingly realistic split logs and flames Simple start-up and use for continual enjoyment Adjust flame, heat and ambiance Heat with more than 70% efficiency Available in 30” or 35” models Up to 35,000 BTUs Minimum Fireplace Opening: 30" - 31"FW x 20.75"RW x 20.75"H x 15"D 35" - 35"FW x 24"RW x 25.5"H x 16"D