This face-fixed (or semi-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 as the door is opened by just a few centimetres.

Key benefits

• Effective acoustic sealing solution that can easily be retrofitted to existing door assemblies.
• Quickly and easily fitted to the bottom of door.
• Can be fitted semi mortised for a flush finish.
• Dual internal sealing fins enhance acoustic and smoke containment performance.
• Supplied with a fire rated silicone rubber gasket and aesthetic push-fit end caps.
• Fully automatic, no power connection required.
• Simple adjustment to suit varying door gap requirements.
• Proven long term reliability.

Standard lengths

820mm (cuts back to 735mm)
920mm (cuts back to 820mm)
1070mm (cuts back to 920mm)

Gap sizes
Accommodates and seals gaps from up to 13mm. Greater gaps can be sealed if product is used with a threshold plate.

Fixing method
Face-fixed or semi-mortised to the bottom of the door. Fixing screws are supplied.

Finishes
Silver anodised aluminium with grey push-fit end caps and grey silicone rubber gasket.

Approvals
Fire: Tested in accordance with AS1530.4 on proprietary AS1905.1 fire door assemblies for up to 4 hour rating.
Smoke: AS1530.7 smoke test data on AS6905 compliant smoke door assemblies. Conforms with BCA Specification C3.4 smoke sealing requirements.
Sound: Acoustically tested in accordance with ISO10140-2 and AS/NZS717.1 with ratings up to 42Rw on appropriate rated assemblies.
Durability: Long term mechanical test, completing 100,000 cycles without failure.