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Standard Construction
CEILING RADIATION DAMPER:
Rating: UL listed ceiling radiation damper UL-555C
Fusible Link: 165°F standard
Blades: 22 Ga. galvanized steel with ceramic fiberglass cover
Frame: Roll formed 22 Ga. galvanized steel
PLENUM BOX:
Outer Box: 26 Ga. galvanized steel
Collar: Roll formed 26 Ga. galvanized steel with roll formed 1/4″ beading
Insulation: None provided
Round beaded collar provided nominal order diameter order size (1-1/4”)