Designed with constant force springs in the horizontal configurations to ensure closure under airflow conditions. Meets all UL and NFPA requirements for Primary Fire Dampers, and carries a UL555 classified fire damper label. Approved for use where ducts penetrate partitions with fire resistance ratings of two hours or less. 1-1/2 hour rating for use in fire barriers rated two hours or less. Optional installed duct sleeves available.
Item Codes:
DFDTA66NS Dynamic Fire Damper Type A 6×6 No Sleeve
DFDTA88NS Dynamic Fire Damper Type A 8×8 No Sleeve
DFDTA1414NS Dynamic Fire Damper Type A 14×14 No Sleeve
DFDTA1010NS Dynamic Fire Damper Type A 10×10 No Sleeve
DFDTA1212NS Dynamic Fire Damper Type A 12×12 No Sleeve
MT^DFDTA1814NS Dynamic Fire Damper TypeA 18×14 No Sleeve #151A1814L1NS
MT^DFDTA1012NS Dynamic Fire Damper TypeA 10×12 No Sleeve #151A1012L1NS
MT^DFDTA2214NS Dynamic Fire Damper TypeA 22×14 No Sleeve #151A2214L1NS
MT^DFDTA2014NS Dynamic Fire Damper TypeA 20×14 No Sleeve #151A2014L1NS
MT^DFDTA1216NS Dynamic Fire Damper TypeA 12×16 No Sleeve #151A1216L1NS
MT^DFDTA1412NS Dynamic Fire Damper TypeA 14×12 No Sleeve #151A1412L1NS
