Model 3400 Extruded Aluminum Backdraft Damper

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Vent_3400 Vent_3400dim1 Vent_3400dim2

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.
3400performance

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