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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) keeps your building dry during and after construction, and provides spare capacity for future needs. The sleeve is easily fixed and cast into structures of varying thickness and ensures a tight seal until its plate is knocked out for cable and pipe routing. The sleeves have an integrated feature which allows them to be connected into space efficient clusters. Once cables or pipes are routed, they are to be sealed with Roxtec UG™ underground solutions in the corresponding size.

  • Light-weight
  • Area efficient
  • Quick and easy to install

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Specification texts

Roxtec KOS (Roxtec knock-out sleeve, KOS,) is designed to seal the duct until cables are installed. Manufactured from black ABS plastic with innovative knock-out cover, easily removed when cables are routed. The KOS is available in two depth versions: 150mm that can be cut down to 120mm depth, and 100mm that can be cut town to 90mm depth, with internal diameters suited to fit sizes 100, 150 and 200mm Roxtec UG™ seals.
  • Extension possible with backside push connection to fit 110, 160 and 200mm Ø cable ducting
  • Sealed at point of civil construction
  • Knock-out cover, no special tools needed to open
  • Radius edge to avoid damage when routing cables
  • Approved and tested for use with Roxtec seals
  • Tested to 1bar catastrophic water pressure
  • Prevents ingress from water, vermin, gas and dust until cables are routed
  • Connectivity to form KOS clusters via press/snap connection
  • Area efficient formation with a centre to centre distance of 180, 250 or 280mm, depending on size, when connected via press/snap connection

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