Description and standards
Smoke tightness S is the component’s ability to reduce or eliminate the transmission of a gas or smoke from one side of the door to the other. The following performance levels are defined:
Sa relates to smoke tightness at ambient temperature only.
Sm relates to smoke tightness at ambient temperature and at 200 °C.
In the case of fire-resisting components, S must be added to the fire resistance classification (e.g. EI2 60 – Sm).
- Smoke tightness Sm – when the maximum flow rate measured at one of the temperatures (ambient and 200 °C) and up to a pressure of 50 Pa does not exceed 20 m³/h for a single-leaf door set or 30 m³/h for a double-leaf door set.
- Smoke tightness Sa – when the maximum flow rate measured at ambient temperature and at a pressure of less than or equal to 25 Pa only does not exceed 3m³/h per metre in clearance length between the door set’s fixed and mobile components.
Combination of performance features
Thanks to their modular structure based on Metal+, Heinen smoke tightness products can also have other performance features combined and added to them, such as:
- Fire resistance
- Burglary resistance
- Bullet-proof protection
- Acoustic protection
- Air tightness
- Thermal insulation