Additional InformationASTM E814|ASTM E90|ASTM G21|OSHA Approved|UL 1479|UL Listed|ULC CAN-S115
Marketing InformationThese cast-in-place UL listed sleeves are designed for use with metal, insulated metal and plastic pipe penetrations ranging from 8 to 12 in. HoldRite® is the only manufacturer currently offering a 12 in option, a 1 in stackable extension - which can serve as a water dam when two are installed together after concrete is poured and an OSHA compliant safety cap.