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3M 1" Putty Sleeve

Brand: 3M Mfg#: DT100
Product#: 479DT100
Based on Product Sourcing

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Kit allows for both new and retrofit data and telecom cable firestop installations. Ideal for high traffic cable penetrations


  • Suitable for installation in gypsum wallboard and concrete walls or floors
  • Tested up to 4 hr for fire rated through penetration systems in accordance with ASTM E 814 (UL 1479)
  • Two piece split/hinged design for easy retrofit installation on existing cables
  • Ready to install kit for a complete cable or blank firestop installation
  • Blank sleeve (0% cable fill) accommodates future cable installation
  • No gasket required