A high performance, energy efficient centrifugal fan that exhausts directly to the outside or through long lengths of ducting (up to 15m). The unit runs continuously at either of two pre-selected speeds that are fixed at installation. Features an easily removable washable polypropylene filter and anti-vibration gasket. Energy saving ventilation with extremely low running costs. Compliant with Building Regulations Parts L1 2010 and F2010 and IPX4 splashproof rated for safe installation in Zones I and II.