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Roxtec knock-out sleeve

Sleeve with knock-out plate for sealing prior to cable and pipe routing.

The Roxtec Knock-out sleeve (KOS) UG™ keeps your building dry during and after construction, and provides spare capacity for future needs. The sleeve is cast into the foundation and ensures a tight seal until the plates are knocked out for cable and pipe routing and sealing.

  • Light-weight
  • Area efficient
  • Quick and easy to install
Roxtec knock-out sleeve

Ratings & certificates


  • N/A


  • Gas: 0,3 bar
  • Water: 0,3 bar
  • IP 68



Structure of installation

  • Concrete & brick

Mounting type

  • Casted

Installation instructions

Configure your own transit kit

Select your set of sealing modules