The Soho Black Multiflue inset gas fire is one of our most popular models thanks to its Slimline design. It is designed to fit virtually 99% of any modern pre-cast flues, pre-fabricated flue systems (class 1 or class 2 with min. 127mm or 5" diameter) or conventional chimneys. The Slimline firebox fits a standard opening, generally 406 wide x 558mm High (16" wide x 22"). Most importantly this fire only requires a fireplace depth of 108mm plus 20mm for debris collection. The maximum heat output is 3.1kW (Gross), which provides sufficient heat to warm a medium sized room within a modern home. The control is a manual Rotary but is also available in Fingerslide or Remote Control. It does not require a mains power supply.