ASDB Seal - Rebate Fit Version

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Product Features

  • Acoustically tested on proprietary fire doors

  • Aluminium body with self extinguishing PVC rubber coextruded seal and carrier.

  • Sound reduction of up to Rw 42 dB*

  • Suitable for new and retrofit applications.

  • Rebated fitting - comes with prefitted screws.

  • Aluminium finish.

  • Tested to 200,000 cycles

To Order & Specify

For all Enquiries about this product please contact us:

Please quote - Quantity | Trade name | Product Ref | Colour | Size

Typical wording - 

15 | ASDB Seal - Rebate Fit Version | AFASDB/1130 | Aluminium | 1130mm




Once your order is received we will phone to confirm all details. For in-stock items orders received before 3pm (Monday-Friday) are dispatched for delivery on the following working day (Monday-Friday).

Product Description

An acoustically tested door bottom seal designed for rebated installation mounted into a 13mm x 28mm groove that has been morticed into the bottom edge of the door. This acoustic seal is also available in a face mounted version. This automatic, drop-down action, door bottom seal is spring loaded to lift clear of the floor as soon as the door leaf is opened by a few millimetres. Operates automatically, by the pressure of the door jamb on the seal's adjusting screw, to drop down and seal when the door closes and retract when the door opens. Tested for durability 200,000 cycles completed without failure for fire rated smoke doors.Suitable for all types of wooden doors. 14mm maximum drop, Graduated Scissor action (seal drops on hinge side before lock side).

Product Information

  • ​Noise Reduction Index up to Rw 42dB*.

  • Min/Max Gap: 3mm - 13mm.

  • Seal Lengths: 330mm, 430mm, 530mm, 630mm, 730mm, 830mm, 930mm, 1030mm, 1130mm.

  • Maximum trimming: 50mm - 330mm | 125mm - 430mm | 150mm - 530mm to 1130mm.

  • Seal easily removed to prevent damage during installation.

    * Quoted sound reduction rating will vary depending on the door density and any additional threshold & perimeter seals used in conjunction with this product - contact us for confirmation before specifying.


For further information on installation requirements please contact the technical:



Health and Safety

The product does not present any known health hazards during or after installation. Normal good industrial and personal hygiene practices should be observed. For further information on health and safety requirements please contact the technical team on:



As part of our policy of ongoing improvements, we reserve the right to modify, alter or change product specifications without giving notice. Product illustrations are representations only. All information contained in this document is provided for guidance only, and as Astrodraft (part of the Astroflame (Fire Seals) group) has no control over the installation methods of the products, or of the prevailing site conditions, no warranties expressed or implied are intended to be given as to the actual performance of the products mentioned or referred to, and no liability whatsoever will be accepted for any loss, damage or injury arising from the use of the information given of products mentioned or referred to herein.

The above information to the best of our knowledge is true and accurate and based upon current test data and is supplied for your guidance only. Customers should satisfy themselves to the suitability of the product in its intended use and no guarantee is given or implied since the conditions of actual use are beyond our control. Astrodraft (part of the Astroflame (Fire Seals) Ltd group), disclaim any liability for loss, damage or other expense arising from the use of information, data or products mentioned or referred to and reserve the right to change any details or specifications without notice.


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Astrodraft is part of the Astroflame Group has undergone an extensive quality and reliability programme to ISO 9001:2015 Approved quality management system.