Ready Split Sleeve 4" Split Firestop Sleeve - Firestopping Solution The Ready Split Sleeve 4" Split Firestop Sleeve by Specified Technologies is designed for protecting and supporting existing cables through fire-rated and non-rated barriers. This UL Certified firestop sleeve kit is suitable for common construction types, including concrete floors, walls, concrete block walls, and gypsum board/stud wall assemblies up to 10 inches thick. It facilitates easy installation around existing cable bundles without cutting, making it ideal for electrical distributors and switchgear suppliers managing cable penetrations. Specifications Application: Common constructions including concrete floors, concrete walls, concrete block walls, and gypsum board/stud wall assemblies up to 10" (250 mm) thick Material: Thick Steel (0.059” zinc plated steel) Dimensions: 4 IN (Length: 19 in., Width: 11.5 in., Height: 3 in.) Color: Silver Fire Rating: 1-2 HR Mounting: Walls or Floors Opening Type: Electrical Through-Penetrations, Cable Through-Penetrations Installation Type: Screws Product Weight: 7.47 lbs Made in USA: Yes Manufacturer: Specified Technologies Manufacturer Part #: FSR400 Features Two-piece split design allows installation around existing cables without cutting Includes steel sleeve halves with rolled edges, steel escutcheon plates with intumescent gaskets, and SpecSeal SSP Firestop Putty Factory supplied intumescent firestop gasket eliminates need for external firestop seals Ready to install with no waste and no cutting required Locks securely into place without support struts or clamps Firestop putty provided to seal ends up to 1 inch (25 mm) depth UL Certified and code compliant to ASTM E814 (UL1479) and CAN/ULC-S115 standards Suitable for rated and non-rated barriers, impeding fire, smoke, superheated gases, particulate dust, and minimizing noise transmission Downloads & Links Spec Sheet Warranty Installation Sheet Product Brochure Safety Data Sheet