This firestop is used in ceiling/floor penetrations above a fireplace to help reduce the chances of a fire. A firestop is not required when passing through the roof. Fits on the underside of ceiling.
WARNING: Carcinogens: This product can expose you to chemicals including Lead, which is [are] known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
Limited Lifetime Warranty