FP Intumescent Firestop Plug Sized For 4 in. (102 mm) Opening/Sleeve | STI-FP400

SpecSeal FP Intumescent Firestop plugs are easy to install, creating a robust seal against fire and smoke. Firestop plugs make an excellent solution for temporary installation overnight as well as permanent long-term seals for blank openings and cable penetrations. Sized to fit 2" and 4" diam. Openings, firestop plugs make sealing conduit stubs and sleeves a breeze.

• Intumescent - expands in all directions
• Testing in gypsum board walls and concrete walls and floors
• No expiration date
• Combines with other SpecSeal Firestop products