Posted on April 2, 2019April 4, 2019 by Pulse AssentISO 21927-4:2019 Smoke and heat control systems Natural smoke and heat exhaust ventilators. Design, requirements and installation Link: ISO 21927-4:2019 Smoke and heat control systems Natural smoke and heat exhaust ventilators. Design, requirements and installation Source: BSI Standards Related Posts:Plan to drive down the cost of clean heatNext generation of heat networks to power UK's green…Space data helping Earth adapt to challenges of…Local communities urged to help shape the natural…UK confirms pledge for zero-emission HGVs by 2040…