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Opposed Blade Damper
Model: OII
The OII High Efficiency Type opposed blade dampers are specially designed and built for use with square, rectangular diffusers and grilles, nominal damper sizes correspond to neck sizes. Sufficient tolerances are provided so that all dampers may be installed in supply ducts which are sized to fit inside the diffuser and grille necks. These opposed blade dampers are provided with an operating lever to permit adjustment through the face of the diffuser. It is not necessary with the OII damper to consider the direction of the air flow in the main duct because it is always located just on top of the diffuser itself. this damper provides a full range of volume control. |
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