This fully mortised aluminium automatic drop seal features a silicone rubber gasket and internal fins. It is used to close the gap under single swing doors to maintain their acoustic, smoke or 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.
Key benefits
Standard lengths
435mm (may be cut back to 335mm)
535mm (may be cut back to 435mm)
635mm (may be cut back to 535mm)
735mm (may be cut back to 635mm)
820mm (may be cut back to 735mm)
920mm (may be cut back to 820mm)
1070mm (may be cut back to 920mm)
1220mm (may be cut back to 1070mm)
1400mm* (may be cut back to 1220mm)
*Non-standard sizes do not hold test evidence for the approval for use. Speak to our Technical Team for advice.
Gap sizes
Accommodates and seals gaps up to 13mm. Greater
gaps can be sealed if product is used with a threshold plate.
Fixing method
Fits into a 15mm wide x 37mm deep groove and retained in place by screw fixing through the seal flanges.
Finishes
Silver anodised aluminium with stainless steel end plates and grey silicone rubber gasket.