STI Ready® Sleeve Firestop Pathway Kits

A Complete Fire Stopping Kit For New And Existing Through-Wall Cable Penetrations


What's special about these firestop kits?

  • The putty perfectly seals out superheated gases and dust, and minimizes the transmission of noise, fire and smoke
  • Kits come complete with sleeve, escutcheon plates, gaskets and putty for an economical fire -stopping solution
  • The 2" and 4" sizes include a rolled safety lip to eliminate sharp edges and prevent cable jackets from being accidentally stripped
  • Click for More Features

With STI's Ready® Sleeve Kits, there is no need to buy many different costly items to maintain the firestop in your wall or ceiling. Just choose from 1, 2, or 4" diameter sleeves, and the putty, firestop gaskets, mounting escutcheons and wall labels are all included.

Part #Trade SizeSleeve DiameterPlate DiameterMaximum OpeningPrice
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  • Enough putty is provided to seal the ends 1" deep for extra fire and smoke protection
  • The Ready® sleeves are great to use in concrete floors, walls, block walls, and gypsum board - perfect for most types of construction
  • Larger sizes of the Ready Sleeve include a built-in bushing that protects the cable jacket and allows for easy cable pulling
  • Putty doesn't harden, so it's a snap to add or subtract cables - just make your changes, and reapply putty to original depth
  • Standard-sized sleeves are perfect for gypsum board into which round holes can be easily drilled; larger sleeves are available for installation in masonry where drills could cause blowouts
  • UL tested and classified in accordance with ASTM E-814, UL 1479



Available Sizes 1" (25mm), 2" (51mm), and 4" (102mm)
Sleeve and Plate Construction 0.059" (1.5mm) thick steel (zinc plated)
Intumescent Gasket
Expansion Temp 350°F (177°C)
Volume Expansion 15x (free expansion)
In-Service Temp 130°F (54.4°C)
Putty Fill Material
Color Red
Odor None
Solids 100%
Expansion Temp 230°F (110°C)
Volume Expansion 8x (free expansion)
In-Service Temp 130°F (54.4°C)
VOC Content N/A
Shelf Life No Limit






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Questions & Answers


How long is the sleeve?

Asked by Anonymous user on 01.13 AM Tuesday, 11 April, 2017

  • - Hello, No matter the diameter of the kits, they are each 12" long.

    andrew b. on 03.19 PM Tuesday, 11 April, 2017

According to STI system search there is no rated system going through a wood floor/ceiling assembly. Is there another product for that application, or is it possible for this to be approved for that use?

Asked by Anonymous user on 11.16 AM Wednesday, 26 July, 2017

  • - Hello, There is no testing with Ready Sleeve in floor-ceiling assemblies. Our recommendation would be to use EZ Path.

    Anonymous user on 11.21 AM Friday, 28 July, 2017

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