The zero-clearance Flex Island fireplace insert is designed as a room divider, with four open sides enabling the hypnotic flame to be viewed from the front, back, left and right sides. The UL Listed Flex Island models come with a base component that holds the burner and a top component that lines the bulkhead above. The clean lines and 'all flame' configuration of the Flex 50IL 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.