Switch Box Inserts - TENMAT

TENMAT Firefly 130 Fire Rated Socket/Switch Box Inserts are a cost effective and simple fire and acoustic solution for protecting electrical switch and socket boxes when fitted in fire and acoustically rated walls. The fire resistant material fully lines the socket to provide a fire seal that limits the spread of fire within and through the partition.

The Switch Box Inserts are pre-formed and can be installed in seconds without assembly or adhesives. The profiled design ensures that the insert can be simply push fitted into the electrical metal or plastic back boxes. The flanged design also ensures that the Socket Box Insert remains in position during a fire even when fitted within plastic drylining boxes. In addition, the insulative nature of the product and gasket sealing design also ensures acoustic performance of the wall can be maintained and air leakage through the socket can be minimised. Offering significant labour and cost savings over plasterboard  lining or putty pad solutions, the Socket Box Inserts are available to suit both single and double sockets.

Switch Box Inserts
Additional info

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  • 2 Hour Fire Rating
  • Acoustic Properties
  • Fits in seconds
  • No adhesives, no mess
  • Fits inside back boxes
  • Improved airtightness and energy saving
  • Dramatically reduces air leakage
  • Reinstates insulation continuity
  • Easy to fit with no special skills or tools required
  • Help to minimise heat loss into wall and reduce energy costs
  • Acoustically rated to 67 dB
  • Robust Detail approved
  • Made from Fire Resistant Material
  • Easy to check and inspect
  • Suitable for metal and plastic boxes
  • Can be retro fitted to existing sockets

Fire Testing Approvals

2 hour fire tested to BS476:part 20/22:1987 for both integrity and insulation.
Suitable for insulated and uninsulated plasterboard partitions.
Test no Chilt/RF08071 AR1
2 hour fire tested to the principles of BSEN 1363-1:1999 for both integrity and insulation.
Test no: Chilt/IF08039

Acoustic Testing Approvals

Tested in accordance with BS EN ISO 140-3:1995 and BS EN ISO 717-1:1997 under UKAS conditions in a timber stud wall construction. Test No.: 247373 / Building Research Establishment (BRE)
Certificate No.: 213942 / BRE

  • Single and Double Socket Boxes in 35mm depth
  • Single and Double Socket Boxes in 47mm depth

Download FF130 Single Socket 35mm Revit

Download FF130 Single Socket 47mm Revit

Download FF130 Double Socket 35mm Revit

Download FF130 Double Socket 47mm Revit


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