Innovative flush-mounted junction boxes for concrete installations.

A wide range of advanced features for electrical installations in concrete construction.

The 9907.20 flush-mounted junction box features a wide range of advanced functions, making it the ideal choice for electricians. With 16 M20/25 combination entries and 4 M32/40 combination entries for KRFG installation conduits, this product offers impressive versatility and adaptability to various installation requirements.The two-part design of the flush-mounted junction box ensures easy alignment and efficient installation. The front part is fitted with a special membrane and features an innovative sealing lip that reliably prevents concrete slurry from seeping in. In addition, the front part is fitted with four pre-mounted nails.

The two-part design of the flush-mounted junction box ensures easy alignment and efficient installation. The front part is fitted with a special membrane and features an innovative sealing lip that reliably prevents concrete slurry from seeping in. In addition, the front part is fitted with four pre-mounted nails.

    • The conduit entries are secured against accidental opening caused by vibrating reinforcement bars or being stepped on
    • Open conduit entries are easily identified during inspection rounds, as the flush-mounted junction box is two-tone
    • Two-part design for optimal alignment and installation
Innovative flush-mounted junction boxes for concrete installations
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Innovative flush-mounted junction boxes for concrete installations

A variety of advanced features.

1.4 MB
  • Align and fix the front part to the formwork using the four pre-installed nails.
  • Snap the top section of the junction box into place on the front part. Use a hammer to open the required conduit entries.
  • Connect conduits to the junction box and secure them with cable ties. Capacity: 16 M20/25 combination entries and 4 M32/40 combination entries for KRFG installation conduits.
  • After stripping the formwork, open the diaphragm with a hammer and, if necessary, a screwdriver. In the case of insulated slabs, extension pieces (Art.-No. 9907.68 and 9907.68.45) may be used (several if required).

Innovative flush-mounted junction boxes with integrated tunnel extensions for concrete installations.

Maximum space for the installation of drivers for LED strip lighting.

Discover our latest product, the flush-mounted junction box with integrated tunnel extension, supporting the trend towards efficient LED strip lighting in residential installations. This product offers all the benefits of the already successful 9907.20 series.

The specially designed tunnel extension can accommodate LED strip lighting drivers up to a size of 230 x 50 x 35 mm. Especially in areas such as showers, bathrooms or corridors where LED lighting plays an important role, the flush-mounted junction box with tunnel extension offers an ideal solution.

    • The conduit entries are secured against accidental opening due to impacts from reinforcement steel or kicks
    • Open conduit entries are easily identified during inspections thanks to the junction box’s two colours
    • Two-part design
    • Tunnel accommodates a driver for LED strip lighting in residential buildings
Innovative flush-mounted junction boxes with integrated tunnel extensions for concrete installations
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Innovative flush-mounted junction boxes with integrated tunnel extensions for concrete installations
1.1 MB
  • Snap the top part of the junction box onto the front part. Open the required conduit entries with a hammer.
  • Connect conduits to the junction box and secure them with cable ties.
  • Connect conduits to the junction box and secure them with cable ties.
  • After stripping the formwork, open the diaphragm with a hammer and, if necessary, a screwdriver. Wire the driver and push it into the transformer tunnel.

Prefix® wing brackets - For secure installation in wall formwork.

    • For secure installation in wall formwork, use Prefix® wing brackets, set of two (Art.-No. 9940.20).
    • When installed in wall formwork, transformer tunnels must be aligned downwards.