Additional InformationOSHA Approved|ASTM E814|UL File No. 1479|CAN/ULC S115|ASTM E90|ASTM G21|Buy American Act Compliant|cULus Listed
Marketing InformationGet the same adjustable sleeve design even when others provide fire stopping or you want more annular space. HydroFlame™ Pro Series telescoping hollow sleeves don't include intumescent material and can achieve two or three hour F ratings. This fast, simple concrete sleeve for corrugated metal decks or flat form decks remains in the slab, unlike typical hollow sleeves.