Would the perimeter seal have lower opening and closing forces than standard smoke seals?
Yes, quite possibly, the Norsound 710 is positioned next to the door stop and as such is not affected by door growth to the same degree as a centrally fitted seal. To understand door growth look at the diagram below and you will see the door is at its biggest at the point smoke seals are fitted, the perimeter seal sees the door reducing in length as it closes easily over its location. As you can see the arrow labelled door growth line dictates the two points at which the door leaf is at its longest, as the door closes we call this ‘door growth‘ and it is at it‘s worst when it passes over the typical intumescent smoke seal position.
Yes, quite possibly. The Norsound 710 is positioned next to the door stop and as such is not affected by door growth to the same degree as a centrally fitted seal. To understand door growth look at the diagram below and you will see the door is at its longest at the point smoke seals are fitted, the perimeter seal sees the door reducing in length as it closes easily over its location. As you can see the arrow labelled door growth line dictates the two points at which the door leaf is at its longest, as the door closes we call this ‘door growth‘ and it is at it‘s worst when it passes over the typical intumescent smoke seal position.
