Multiple blade joints complicate tight shutoff.
The single rectangular blade concentrates sealing at one perimeter.
A double-skin rectangular blade spans a 2:1 opening and turns about its central horizontal axle. The flanged body provides a bolted interface for isolation sections where a louver-style damper would introduce several blade-edge joints.
| Nominal Width | 610 mm |
|---|---|
| Nominal Height | 305 mm |
| Blade | Centre-pivoted rectangular double skin |
| Frame Materials | Painted steel, 304L or 316L stainless steel |
| Seal Material | Mechanically retained silicone |
| Shaft Construction | Full-length stainless steel axle |
| Flange Arrangement | Rectangular, front and rear |
| Shutoff Configuration | Bubble-tight per AMCA 500-D method |
| Maximum Velocity / Pressure | 20.3 m/s / 2.5 kPa |
| Tùy chỉnh | Available for the intended isolation duty and mating ductwork. |
The single rectangular blade concentrates sealing at one perimeter.
Bearing housings are bolted outside the frame.
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