MJD supplied and installed a Mitsubishi four way blow cassette system to the clean room/ test Laboratory. Mitsubishi was the preferred equipment choice for the following reasons. The airflow is controllable for ceiling heights up to 4.2 metres with automatic adjustment of fan speed. Reduced draught air distribution with independent vane control. Filter lowering operation down to 4metres.'I' see sensor for energy saving and smooth temperature control throughout the room. MJD also provided a Lossnay system to provide fresh air and extract to the enclosed room. The Lossnay unit works in conjunction with the air conditioning system recovering energy that would have otherwise been wasted. The units reduce overall energy costs by extracting stale air and then recovering the heating or cooling to either warm or cool incoming fresh air. By utilising this energy the Lossnay system can save up to 40% on initial capital costs of heating and cooling plant by reducing the load of the occupied space.