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Socket Box Protection

Fire & Acoustic Rated Socket Box Insert Single 47mm Deep

Fire & Acoustic Rated Socket Box Insert Single 47mm Deep

£3.57 £2.98 (ex. VAT)
Easy to install putty pad alternative | Pre-formed inserts to fit common metal and plastic socket box types | Single Size Socket Box Insert - Extra depth 47mm

FREE DELIVERY on orders over £600 (£500 ex. VAT)*
*excluding Boards, Batts, Mortar products and the following postcodes IM, HS, ZE, JE, GY, KW, FK, PH33 or AB


Key Points:
  • BS EN 1366-3 Fire Tested.
  • Fire Ratings of EI30, EI60, EI90 and EI120.
  • Tested in Single Layer & Double Layer Partition Systems.
  • Tested in 75mm thick walls and greater.
  • Tested in “Twin Wall” Fire & Acoustic Partitions.
  • Acoustically Tested / Limits Air Leakage.
  • Back to Back tested in many applications.
  • Suitable and tested for both plastic pattress boxes and metal back boxes.
  • Other sized socket box inserts available single & double boxes 35mm and 47mm Depths.
  • Tested with multiple cable penetrations.
  • Pre-formed for easy installation – can be installed in seconds without assembly or adhesives.
  • No maintenance required.
  • Mess free installation – no need for adhesives, screws or drilling.
  • Can be retrofitted.


Astroflame’s Socket Box Inserts, are manufactured from halogen free, low smoke, fire resistant, mineral fibre material and are designed to maintain the fire performance of partition (stud) wall constructions when penetrated by steel or plastic electrical back boxes. The insert will also provide resistance to the passage of sound and air movement.

In the event of a fire the Socket Box Inserts mineral fibre material will prevent the fire passing through the electrical back box aperture, providing effective fire resistance, for integrity (E) and insulation (I) from 30 to 120 minutes (EI30 to EI120) depending upon the wall construction.

Rotate and zoom into the Fire & Acoustic Rated Socket Box Insert product. Just click the image below to load the 3D view player and use the tools by clicking the arrow icon on the right hand side of the screen.


  • Single Socket Electrical Wall Box Insert -  EXTRA deep 47mm depth.


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: +(0)1329 841416 or email


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.


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:

For further information on installation requirements please refer to the socket box manufacturer data and wall specification to ensure the compatibility of this product, if in doubt please contact the technical team with services and wall specification on Tel: +(0)1329 841416 or email

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