| Model: | 540 |
| Minimum Panel Size: | 6" x 6" I.D. (Single Panel)
6" x 12" I.D. (Opposed Blade) |
| Maximum Panel Size: | 60" x 96" I.D. |
| Frame Depth: | 10" Deep |
| Frame Type: | Channel |
| Frame Material: | 10 ga. |
| Blade Type: | Airfoil |
| Blade Material: | 10 ga. |
| Blade Action: | Parallel or Opposing |
| Bearings: | Ball Bearings, Mounted on Stand-Off Bracket with Stuffing Box and Replaceable Packing |
| Linkage: | Jamb |
| Operator: | Manual Hand Quadrant or Lever Arm for Motor Actuator |
| Maximum Temperature: | 800°F |
| Finish: | High Temperature Aluminum Paint |
| Operating Conditions: | Maximum 15" Static Pressure |
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