Briton 1120 Fire Door Closer - Size 2-4Successfully tested on Fire Doors to comply with AS1905. 1 Briton 1120 series Fire Rated Door Closer Size 2 6 The Briton 1120 Series Fire Door closer is a surface mounted door closer which is a slimline unit designed to be used on commercial interior or exterior wood and metal fire doors Non handed door closer Independent adjustment valves for controlling backcheck, closing, and latching speeds Optional Hold open and track arms are available Fire