Fire Resistant: Up to 3 hours
Has a flexible fire blanket
Link that is of +165°F Standard
Spring steel rolled springs included
21 gauge Galvanized steel for frame
Ceiling radiation damper with 3 hour rating
Includes fiberglass cover and ceramic fiber
25 gauge Galvanized steel for Damper Adapter
The force of one springs is no less than 4.496 lbf
Comes with roll-framed frame made of galvanized steel