Firestop drop-in and under-deck devices

A method of making a firestop device, the method comprising:

• providing a sheet metal structure, the sheet metal structure including a first part and a second part, the first and second parts being movable between an opened position and a closed position, the sheet metal structure having an inner surface and an outer surface, the sheet metal structure having a plurality of ring locating tabs;
• when in the closed position, securing a first smoke-seal ring and a first intumescent ring to the outer surface of the sheet metal structure;
• when in the opened position, securing a second smoke-seal ring and a second intumescent ring to the inner surface of the sheet metal structure;
• and
• retaining the first and second smoke-seal rings and the first and second intumescent rings to the respective inner and outer surfaces of the sheet metal structure with the plurality of ring locating tabs.

A method of installing a firestop device, comprising:

• providing a metal cage, the metal cage having a first smoke-seal ring positioned on an outer surface thereof, a first intumescent ring positioned below the first smoke-seal ring on the outer surface, a second smoke-seal ring positioned on an inner surface of the metal cage, and a second intumescent ring positioned below the second smoke-seal ring on the inner surface;
• moving the metal cage from an opened position to a closed position;
• positioning the metal cage into a passage formed or drilled into a concrete structure;
• and
• rigidly fixing the metal cage to the concrete structure.