Through Pentration Threaded Firestop Sleeve Kit 4 Inch Diameter, Unique Fire Stop Products, Mfr#: TF-4

The UNIQUE Threaded Firestop Sleeve is used for new cable installations through sheet rock, cinder block, cement, masonry firewalls or 3 in. slab floor.UL Classified for up to 4 hours horizontal and 3 hours vertical. UNIQUE’s Threaded Firestop Sleeve is our most robust system. Designed for new cable installations where the hole through the firewall is pre-cut. All UNIQUE firestop sleeve systems systems include everything needed to install and seal. All of UNIQUE fire stop sleeves come with Intumescent Putty for a minimum 25% cable load.