This face fixed (or semi mortised) aluminium automatic drop seal 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

• Effective acoustic sealing solution that can easily be retrofitted to existing door assemblies.
• Fixing points are fully concealed behind a click-fit cover strip.
• Quickly and easily fitted to the bottom of door, it may also be semi-rebated for a flush finish.
• May 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 colour matched 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 (may be trimmed back to 580mm)
920mm (may be trimmed back to 820mm)
1070mm (may be trimmed back to 920mm)
1220mm (may be trimmed back to 1070mm).

Gap sizes
Accommodates and seals gaps from 1mm 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: Approved for use on proprietary AS1905.1 fire doors for up to 4 hour fire 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 37Rw on appropriate rated assemblies.
Durability: Long term mechanical test, completing 1,000,000 cycles without failure.