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 Flex 104IL.BX2 includes a design that features Decorative Boxes on either side of the firebox. This 2 Box-design boasts an attractive visual symmetry while the glass panels that divide the Decorative Boxes and the Firebox create an uninterrupted, streamlined look. The longest of the XL Burner series, the XL1200 delivers a stunning linear flame. This elongated burner can heat up to 700ft2 and provides the ideal bioethanol fire for commercial and hospitality spaces such as open plan restaurants and bars. Each burner holds 2.6 gallons of fuel, and can deliver a stunning flame for up to 14 hours.