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How axial ventilation fans work and how to specify them: types and pressure ranges, axial vs centrifugal selection, fan curves and fan laws, ErP efficiency grades, EN 12101-3 smoke classes and ATEX rules, plus an 11-point selection checklist for engineers and buyers.
How to design smoke and CO control for enclosed and underground car parks, to EN 12101-3 and BS 7346-7.