Introducing the Spanwall Facades RF50-FR Rainscreen System. The RF50-FR Rear Fixed 50mm Fire Rated Rainscreen System has been developed to meet the demand created by Architects, Specifiers and Contractors for a precision made product that can meet all the statutory Structural, Fire, Thermal, Acoustic, and Weathering criteria. The RF50-FR Rear Fixed 50mm Fire Rated Rainscreen System has been Fire tested to BR 135 (3rd edition): 2013 and BS 8414-2:2020.