Smoke-resistant doors in hospitals: what do Sa, S200 and Sa3/Sa4 mean?
16 June 2026
When a fire occurs in a hospital, smoke is often more dangerous than the flames themselves. It reduces visibility, impairs breathing and can make evacuation difficult within minutes. In healthcare environments, where patients may not be able to evacuate independently, smoke control is therefore critical. In practice, however, smoke resistance is still sometimes treated too […]
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