desks
dayton 2tgg2 rectangular fire damper11 3 4x23 3 4 in
fire damper rectangular mounting type dynamic vertical or horizontal nominal duct width 24 in . nominal duct height 12 in . damper depth 3 11 16 in . recommended retaining angle 2tgh9 material 22 ga. galvanized steel damper height 11 3 4 in . damper width 23 3 4 in . fire rated 1 1 2 hr . free area 1.416 sq. ft. fusible link 165 degrees f for use with low pressure hvac systems standards ul standard 555 nfpa 80 90a and 101 ibc csfm nyc mea br b features b ul li actual size height in . 11 3 4 li li actual size width in . 23 3 4 li li for use with low pressure hvac systems li li free area square ft. 1.416 li li includes stainless steel closure spring ul fusible link li li item fire damper li li material 22 ga. galvanized steel li li nominal duct height in . 12 li li nominal duct width in . 24 li li overall depth in . 3 11 16 li li type dynamic with fire resistance rating less than 3 hours li li construction 22 gauge galvanized steel li li fire rated hours 1 1 2 li li for use where hvac ducts penetrate partitions with a fire resistance rating less than 3 hours li li mount vertical or horizontal li li mounting type dynamic vertical or horizontal li li shape rectangular li li standards ul standard 555 nfpa 80 90a and 101 ibc csfm nyc mea li li fusible link 165 degrees f li li recommended retaining angle 2tgh9 li li fire rated 1 1 2 hr . li li free area 1.416 sq. ft. li li nominal duct height 12 li li nominal duct width 24 li li damper depth 3 11 16 li li damper height 11 3 4 li li damper width 23 3 4 li ul