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

• Fully concealed and mechanically fixed to the bottom of the door through the flanges.
• Dual internal sealing fins enhance acoustic and smoke containment performance.
• Supplied with high performance fire rated silicone rubber gasket and aesthetic colour matched end caps.
• Fully automatic, no power connection required.
• Simple adjustment to suit varying door gap requirements.
• Proven long term reliability.

Standard lengths

920mm (cuts back to 820mm)
1070mm (cuts back to 920mm)
1220mm (cuts back to 1070mm)

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.