SELKIRK 206465 Firestop/Joist Shield, 6 in, Stainless Steel

Prevents or delays the rapid spread of fire (regardless of the cause) in a home or building. The sheet metal firestop prevents the chimney passageway from becoming an easy pathway for fire to spread from one floor to another.Prevents or delays the rapid spread of fire (regardless of the cause) in a home or building. The sheet metal firestop prevents the chimney passageway from becoming an easy pathway for fire to spread from one floor to another.