Nymbus SC is a smoke barrier system designed to limit the spread of smoke in the event of a fire and to channel smoke and heat towards the extraction system. Nymbus SC is an element of the general smoke and heat ventilation system and separates one smoke zone from another. The Nymbus SC series curtains consist of two types- fixed and dynamic (movable). The smoke curtains are made up of a heat resistant and smoke proof textile fabric and fastening elements. Normally, the fixed smoke curtains are lowered and stationary.

The dynamic smoke curtains consist of a heat resistant and smoke proof fabric, a working shaft in combination with a tubular motor and a mounting box. In their normal state, the dynamic smoke barriers are housed in the box and are concealed from view. When triggered by an event, the dynamic smoke curtain deploys to its operational position.