Fire-retarding covering Type BN-OF

Fire-retarding covering Type BN-OF

The fire-retarding covering BN-OF was developed as an alternative to the conventional coverings. The basis is the well-known perforated metal plank type BN-O, which Lichtgitter is producing and distributing for quite some years. The advanced type BN-OF is especially suitable as a covering for the oil collecting pans beneath the transformer units. In case of fire the flames are restrained by the limited air permeability, but not stifled.


  • Better and quicker control of the collecting pan
  • Shorter switch-off period of the transformer
  • Optimum flow time speed of oil, tempering and rain water
  • Quick possibility to remove the liquid out of the collection pan
  • In case of fire in the collecting pan this system can contain and delay
  • Serial production – short delivery times
  • High safety level during maintenance operations
  • Existing installations can be rebuild without problems
  • The covering is especially suited for locations where in case of an accident the resue service can be immediately at site
  • Technical details
    • Material

      Steel S 235JR


      galvanized acc. to DIN EN ISO EN 1461

      Plank Thickness

      2,5 mm

      Module R

      125 mm

      Production length L

      if possible n x R

      Widths B

      150, 200, 250, 300 mm

      Heights H

      40, 50, 75, 100 mm

      Rim tu1

      approx. 10 mm

      Rim tu2

      approx. 20 mm


Lichtgitter Blechprofilroste GmbH & Co. KG
T: +49 7454 9582-0
F: +49 7454 9582-49

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