With two open sides, Flex Double Sided fireplace insert creates the perfect room divider. The see-through design provides unobstructed views of the flickering flame from the front and the back, infusing warmth and ambiance into two adjacent rooms. With an EcoSmart Flex 68DB.BX1, you have design freedom with the choice of a Decorative Box on the left or right-hand side. Both designs are fitted with a glass panel that divides the box and the Firebox and creates an attractive streamlined look. Instantly transform any wall into a feature, indoors or out, with a stylish, clean-lined Flex Firebox. One of the most popular of the XL Series burners, the XL900 burner delivers a stunning linear flame. With a 2.4 gallons capacity, this elongated burner can heat up to 646ft2, making it ideal for larger residential and hospitality spaces such as open plan restaurants and bars or hotel lobby areas. Efficiency is a key feature of this burner, delivering up to 13 hours of heat generating flame from a single refill.