Don't forget to check the caulking products also
3 M FIRE BLOCK CAULKING says the same thing.
3M Fire Block Sealant FB 136 is a one component, non-combustible draft, smoke and fireblocking sealant, designed to resist high temperatures and smoke passage in
nonrated construction. Use 3M Fire Block Sealant FB 136 to seal interior construction voids around wires, pipes, HVAC ducts and vents, in wood or steel framed non-rated construction.
Will not sag or run in vertical or overhead applications
Reliable and Tough Fireblock
We engineered 3M™ Fire Block FB 136 as a durable fireblock and draftstop. This product seals, fills, insulates and bonds
for non-rated residential and commercial construction. Ready-to-use, this fireblock is intended to resist the free passage of flame and by-products of combustion
within a concealed space of a floor, ceiling or wall cavity, restricting the movement of air, fire and smoke. This fireblock is tested as a Type V commercial and residential fireblock to ASTM E 84 (modified) and acts as a draftstop to help reduce air infiltration. This ready-to-use product is heat-resistant (up to 240°F/115°C).