STI Firestop SpecSeal® Cast-In Tub Box Kit


  • Tested for combustible and non-combustible penetrants
  • Variety of accessories available for any field condition
  • Incorporates built in smoke and water resistant seal
  • Usable in concrete floors as thin as 2-1/2″

SKU: CD201T Category: Tag:

Physical Properties

Shell ConstructionPolypropylene
Tube and Cap ConstructionPolyethylene
Expansion Begins320°F (160°C)
Volume Expansion250x (free expansion)
In Service TemperatureMax. 130°F (54°C)
Shelf LifeNo Limit


STI Firestop

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