... Range:1. Fire blockseal plumbing venting systems, seal plumbing penetrations, seal concealed electrical penetrations, seal recessed light fixtures, seal duct work penetrations between floors2. ... , seal door frames, seal skylights4. Sealantseal attic hatchways, seal exterior plumbing penetrations, seal gas line penetrations, seal exhaust fans, seal electrical outlets, seal sill plates, seal dryer ...