LAS8003 si HSS Drop Seal

This face-fixed or semi-mortised aluminium automatic drop seal features a silicone rubber gasket with intumescent core and internal fins. It is used to close the gap under single swing doors to maintain their acoustic, smoke and energy efficiency performance. The seal incorporates a high efficiency spring loaded mechanism that extends the seal as the door swings shut and automatically retracts it as the door is opened by just a few centimetres.