Installation box



  • For cables and conduits up to 20 mm in diameter
  • Construction in adherence with standards: for airtight sealing in accordance with DIN 4108-7, SIA 180 and RE 2020
  • Provides space for up to three junction boxes
  • Can be extended at will by cutting and sticking together again
  • Excellent values in hazardous substance testing, has been tested according to the ISO 16000 evaluation scheme

Areas of application

For structures without dry lining, the INSTAABOX can create space for junction boxes and the like. It is attached and sealed so that it is airtight to the existing vapour-checking and airtightness layer. It complies with the requirements of DIN 4108-7, SIA 180 and RE 2020 with regard to airtightness when using conventional junction boxes. The INSTAABOX can be used for both internal and external walls.

The INSTAABOX is oversized to prevent the airtight sealing layer being damaged if holes need to be drilled for the junction boxes.

Technical specs

Main product component polyethylene, flexible and extensible
Property Value Regulation
Colour Translucent
Length/width service cavity 260 mm / 130 mm ; 10.24" / 5.12"
Length / width total 320 mm / 190 mm ; 12.6" / 7.48"
Depth 55 mm ; 2.17"
Cable diameter max. 20 mm ; 0.79"
sd value > 10 m EN 1931
g value > 50 MNs/g
Vapour permeance < 0.33 US perms ASTM E 96
Fire rating E EN 13501-1
Temperature resistance permanent -10 °C to 80 °C ; 14 °F to 176 °F
Storage Cool and dry