Model 3400 Extruded Aluminum Backdraft Damper

Click Here for Printable PDF
STANDARD SPECIFICATIONS
  • FRAME:  .090 6063T5 extruded aluminum.
  • BLADE:  .050 6063T5 extruded aluminum.
  • BLADE EDGE SEAL:  Vinyl gasketing extending full length of blades.
  • LINKAGE:  Synthetic pivot brackets and metallic tie rods concealed in damper frame.
  • FINISH:  Standard Mill.
  • MAXIMUM SINGLE SECTION:  40" x 48"
  • MINIMUM SIZE:  6" x 6"
  • MAX. FACE VELOCITY:  2500 F.P.M.
OPTIONS
  • -31  Flange (specify air entering or air exiting).
  • -42  18 x 16 Mesh aluminum insect screen (Removable).
  • -89  Sleeve.
  • -48  18 x 14 Mesh S.S. insect screen (Removable).
  • -45  1/2" x 1/2" x .063 Aluminum screen (Removable).
  • -44  1/2" x 1/2" x 16 Gauge S.S. Screen (Removable).
  • -43  18 x 16 Mesh bronze insect screen (Removable).
  • -40  3/4" expanded aluminum birdscreen (Removable).
  • -40  3/4" expanded aluminum birdscreen (Removable).
NOTES
  1. Recommended for horizontal airflow only.
  2. A and B are opening dimensions. Unless otherwise specified, dampers are made 1/4" undersize.
  3. Counterweights factory provided for dampers 9" in height and above.
Picture