>Trade Name: Astro Trend
Rebated Drop Down Seal For Doors
> Quick Overview
- Rebated model for timber doors.
- Acoustically tested achieving up to 39dB Rw*.
- Removable seal to aid in fitting/replacement.
- 14mm maximum drop.
- Tested to 200,000 cycles.
- Self-directing reinforced plunger.
- Therm type high quality co-extruded, self-extinguishing seal, in an aluminium body.
- Acoustic testing undertaken in accordance with BS EN ISO 10140-1 and BS EN ISO 10140-2 achieving a rating of 39dB.
- Fire tested to BS EN 1634-1 and BS476: Part 22 to 60 minutes.
- Smoke tested to BS EN 1634-3: 2004.
- Certifire approved
TO ORDER & SPECIFY
01329 844 500
sales@astroflame.com
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For in-stock items orders received before 2pm (Monday-Friday) are generally dispatched for delivery on the following working day (Monday-Friday).
> Product Description
Discover the Astro Trend Drop Down Seal a cost-effective and reliable solution for sealing the bottom of timber doors. This rebated drop-down seal automatically closes the gap between the door and the floor, helping to prevent noise, smoke and drafts.
Acoustically tested to achieve up to 39dB Rw*, fire tested up to 60 minutes providing exceptional protection and performance. The Astro Trend Drop Down Seal features a maximum drop of 14mm and can be trimmed to suit your installation requirements.
Designed for durability, the Astro Trend Drop Down Seal has been tested to 200,000 cycles. It also includes a removable seal to simplify fitting and replacement. A self-directing reinforced plunger ensures consistent sealing action.
Manufactured from a high-quality, co-extruded self-extinguishing thermoplastic in an aluminium body, this seal meets rigorous standards:
- Acoustic testing to BS EN ISO 10140-1 and BS EN ISO 10140-2 (39dB* rating).
- Fire testing to BS EN 1634-1 and BS476: Part 22 (60 minutes).
- Smoke tested to BS EN 1634-3:2004.
- Certifire approved.
Available in lengths from 326mm to 1226mm.
Ideal for door projects requiring reliable acoustic, smoke and fire protection in one easy-to-install drop-down seal.
> Product Availability
Maximum trimming:
- 50mm - 326mm
- 135mm - 426mm
- 200mm - 526mm to 1226mm
| Product Code | Description | Colour | Size |
| AFASDBTD/326 | Astro Trend - Rebated Drop Down Seal | Aluminium finish | 326mm |
| AFASDBTD/426 | Astro Trend - Rebated Drop Down Seal | Aluminium finish | 426mm |
| AFASDBTD/526 | Astro Trend - Rebated Drop Down Seal | Aluminium finish | 526mm |
| AFASDBTD/626 | Astro Trend - Rebated Drop Down Seal | Aluminium finish | 626mm |
| AFASDBTD/726 | Astro Trend - Rebated Drop Down Seal | Aluminium finish | 726mm |
| AFASDBTD/826 | Astro Trend - Rebated Drop Down Seal | Aluminium finish | 826mm |
| AFASDBTD/926 | Astro Trend - Rebated Drop Down Seal | Aluminium finish | 926mm |
| AFASDBTD/1026 | Astro Trend - Rebated Drop Down Seal | Aluminium finish | 1026mm |
| AFASDBTD/1126 | Astro Trend - Rebated Drop Down Seal | Aluminium finish | 1126mm |
| AFASDBTD/1226 | Astro Trend - Rebated Drop Down Seal | Aluminium finish | 1226mm |
> To Order & Specify
Please contact us and quote the following - Quantity / Product Description / Product Code / Colour / Size
Typical wording - 10 / Astro Trend - Rebated Drop Down Seal / AFASDBTD/326 / Aluminium finish / 326mm
>> Tel: 01329 844 500 or >> Email: sales@astroflame.com
> Installation
We have technical representatives who provide assistance in the selection and specification of the products on this site and should be consulted for exact installation and product suitability. Ensure an early engagement with ourselves, designers, main contractor and specialist installers before any installation. Other trades and/or manufacturers may need to be consulted. For in-depth information, specification and technical advice please call our Head Office on tel 01329 844 500 or email sales@astroflame.com
> Maintenance
All interested parties, designer, specifier, main contractor and specialist installers should provide access to allow the fire stopping seals to be regularly inspected and maintained, as well as records kept of such maintenance at minimum periods of 12 months, as required by the Regulatory Reform Order, and repaired if necessary. Reference should be made to ASFP TGD 17 – Code of Practice for the Installation and Inspection of Fire Stopping.
> Competency
It is vital that those entrusted to design or install a fire stopping product have the necessary levels of competence to undertake the task professionally and thoroughly. The level of competency required will be commensurate with the expected complexity of the building. All designers must eliminate, reduce or control foreseeable risks that may arise during installation, construction or maintenance when preparing or modifying designs. Clients should ensure that the principal designer and principal contractor carry out their duties under CDM regulations. The ASFP foundation course in passive fire protection provides essential knowledge as part of demonstrating competency and understanding in this key fire protection specialism.
> Additional Notes
* The sound reduction rating will vary depending on the door density and any additional threshold & perimeter seals used in conjunction with this product, contact Astroflame for confirmation before specifying.
For further information on installation requirements please refer to the door manufacturer data to ensure the compatibility of this product, if in doubt please contact the technical team on: tel 01329 844 500 or email sales@astroflame.com
> 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: tel 01329 844 500 or email sales@astroflame.com
> Document Downloads
> Delivery/Returns
For in-stock items orders received before 2pm (Monday-Friday) are generally dispatched for delivery on the following working day (Monday-Friday). All dates quoted for despatch are estimates only and are not guaranteed. We will endeavour to meet these dates but shall have no liability for any delay in despatch or delivery or any damage or loss occasioned thereby. We may deliver products pursuant to any order by instalments. If we are unable to deliver the goods for any reason,you will be contacted and you will not be obliged to pay for the goods which have not been delivered, you also have the option to cancel the goods that have been delivered, however we shall not be liable for any loss of income or profit which may have been caused by the delay or non delivery of goods.
For information about our returns policy please click here.
> Ask a Question
If you've got a question about this product or need some technical help get in touch with the Astroflame sales or technical team to discuss your requirements today. We are open Monday to Friday 8:00am to 5:30pm. You can always contact us on the following:
Web Page Last Modified: 25th March 2026