Smoke leakage (S): Failure of this criterion shall have transpired Should the circulation level in duct A through the exam exceeds ten m³ / (m² h), associated with twenty °C and 1013 mbar, connected to the internal surface area space from the duct Within the furnace. The fuel's shape also https://ductworthinstallation00112.bloguetechno.com/5-easy-facts-about-fire-resistant-ductworth-isntallers-described-71581588