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. The clean lines and 'all flame' configuration of the Flex 50DB means the entire viewing area is dedicated to the eye-catching flame, creating a harmonious blend of traditional style and contemporary design. 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.