• Series 7000 WT: Medium-Duty

Weighted Backdraft Damper

Series 7000 WT: Medium-Duty

  • Front-mounted mechanical weights provide increased load resistance and tighter shut-off.
  • Adjustable, removable weights on each blade allow the opening to be tailored for required resistance and optimal performance based on installation conditions.
  • For horizontal or vertical airflow operation
  • Aluminum pivot points are over-sized for additional strength and durability.
  • Tamco’s weighted backdraft damper blades are securely linked via a large diameter aluminum linkage rod.
  • Silicone seals are provided as standard to ensure sealing longevity. The seals remain flexible down to -40° F/C.
  • Tamco’s dual bearing linkage system is self-sealing, self-lubricating, and non-absorbent, resulting in a maintenance-free performance.

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  • Leakage
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Series 7000 WT Medium Duty, Maintenance-Free Weighted Backdraft Damper:

  • For installations where adjustable blade resistance is required to resist or delay opening
  • Used to increase resistance to the opening of blades against airflow until a desired static pressure is achieved

Air leakage through a 24″ x 24″ (610mm x 610mm) backdraft damper does not exceed 4.32 cfm/ft² (21.95 l/s/m²) against 1″ (0.25 kPa) w.g. differential static pressure at standard air.

MR – Moisture Resistance Option:

  • All zinc-plated steel hardware is replaced with stainless steel, protecting hardware from rust and corrosion when exposed to high humidity or high moisture environments.

SW – Salt Water Resistance Option:

  • Extruded aluminum frames, blades and hardware are clear anodized to a depth of 0.7 mil. (18 microns). This prevents rusting and pitting when backdraft dampers are exposed to salt spray or high humidity environments.
  • All zinc-plated, steel hardware is replaced wtih stainless steel, protecting hardware from rust and corrosion.
  • All aluminum linkage hardware parts are clear anodized.

Caution: Weights and threaded mounting posts are not available in stainless steel and may be subject to rust or corrosion in high moisture or salt spray environments.

Please click the option above that is most applicable to you for more information.

SP – Standard profile

  • Manufactured with 4” (101.6 mm) deep frames
  • Manufactured with blades that are a maximum 6” (152.4 mm) deep.

Series 7000 WT Specifications and Performance Data

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Series 7000 WT Suggested Specifications

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Tamco Medium-Duty Backdraft Damper Installation Guidelines

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Medium-Duty Backdraft Damper Schedule

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