Astrodraft Draught Proofing Supplies


Acoustic Double Door Seal

Trade Names: Astro AS Flipper Seal

Sound Reduction of up to 36dB*

Choice of Black, Brown, White, Light Oak

Woodgrain finishes available

Suitable for Plain or Rebated styles

Easy to install - self adhesive seals

Colour options Black, Brown or White

Woodgrain finishes available on application

A -34dB acoustic seal is available here - Quad Flipper Seal


Double Door Acoustic Seal


The Astro AS Flipper Seal double flipper meeting style seal has been designed for use with either plain or rebated double doorsets, specifically to improve the aesthetics and acoustic properties. It has been tested to show an unaided weighted sound reduction of up to 36dB. The product is supplied fitted with a high performance self adhesive tape to allow the product to be fitted in position prior to screw fixing and is available in various colours.

ASP - Perimeter seal for fire doors - Acoustic and Smoke rated



A 18.0mm
B 11.0mm
C 13.0mm

Perimeter seal diagram


Door symbols

Acoustic Door Seal Symbol Guide

All seals showing an E Doc symbol and stating a dB rating have been independently tested by an accredited test laboratory in order to obtain the rating stated.

* The actual acoustic performance obtained depends on a variety of factors, such as the door density and any additional threshold & perimeter seals used in conjunction with this product. If in doubt contact us for confirmation.

A slimline 34dB reduction acoustic seal is available here - Quad Flipper Seal


Sold individually in 2100mm lengths

Wood Grain p.o.a

To order & specify

Please Quote- Quantity / Trade name / Product Ref / Colour

Test and Assessment Reports

Testing undertaken in accordance with BS EN ISO240-3:1995 revealed a timber doorset assembly with no seals fitted around the perimeter of the doorset achieved a Rw23dB rating. This falls well below the minimum specified in Approved Document E which is 29dB. When tested again with the Astro ASlipper Seal there was an increase in the performance to Rw35dB.

Sound Reduction Performance Graph


For additional testing, or technical information please contact Astrodraft.

Health and Safety

This product presents no known Health problems.


Please refer to the installation sheet that comes with the product


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 ASTROFLAME FIRESEALS LTD 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. ASTROflame (Fireseals) Ltd, 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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