The Fan Filter Unit is a 230V AC, 50/60Hz device that provides a B air flow of 520m³/h and has a static pressure of 160Pa. It comes in a grey RAL7035 colour and has an IP54 rating. The fan units can be reverse mounted for 'A' flow. The filter material used is a thermo-linked progressive structure synthetic fiber with a permanent sealing gasket made of polyurethane foam. The operating temperature range is from -10°C to 50°C. The dimensions of the unit are 325Wx325Hx152Dmm.