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ISO 21927-2:2018
Smoke and heat control systems - Part 2: Specifications for natural smoke and heat exhaust ventilators
This document applies to natural smoke and heat exhaust ventilators (NSHEV) operating as part of smoke and heat exhaust systems (SHEVS), placed on the market. This document specifies requirements and gives test methods for natural smoke and heat exhaust ventilators which are intended to be installed in smoke and heat control systems in buildings.
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International Organization for Standardization [iso]
International Organization for Standardization [iso]