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Impact anchor W-SD WSS 3/L
Impact anchor W-SD WSS 3/L

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Impact anchor W-SD WSS 3/L

Noise insulating quick-assembly system for direct mounting of ventilation ducts, for concrete

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Stop bits must be used (approval is subject to use of a stop bit)


Anchors and stop bits form a perfectly coordinated system. This system unit prevents installation errors and ensures attachment as stipulated in the approval.



  • WSS: Pre-assembled unit (anchor, insulating part and hanger) ensures quick and easy insertion

  • Acoustic insulation directly on the raw ceiling ensures long-lasting, technically sound compliance with DIN 4109

  • Immediate load-bearing capacity — no waiting

  • Minimal suspension height
Proof of Performance
  • Multiple attachment of non-load-bearing systems in concrete: European Technical Approval ETA-07/0138

  • Dimensioned in accordance with the European Technical Approval Guidelines (ETAG) for "Metal Anchors for Use in Concrete", Appendix C, measurement process C

  • Fire resistance (anchoring base: C20/25 to C50/60): R30, R60, R90, R120: Technical Report TR 020 "Evaluation of anchorages in concrete concerning resistance to fire" (included in ETA-07/0138)
Drill hole
Knock in anchor with setting tool until flush
Mount component
  • Multiple attachment of non-load-bearing systems in concrete: European Technical Approval ETA-07/0138

  • Dimensioned in accordance with the European Technical Approval Guidelines (ETAG) for "Metal Anchors for Use in Concrete", Appendix C, measurement process C

  • Fire resistance (anchoring base: C20/25 to C50/60): R30, R60, R90, R120: Technical Report TR 020 "Evaluation of anchorages in concrete concerning resistance to fire" (included in ETA-07/0138)