| Model: | RM |
| Filter: | RM250,RM350 |
| Depth: | 18" |
| Orientation: | Vertical or Horizontal |
| Frame Material: | 20 ga. Rolled Galvanized Steel |
| Frame Type: | True Round |
| Blade Material: | 20 ga. Double-Thickness Galvanized Steel (equal to 14 ga.) |
| Blade Action: | Single Blade |
| Blade Seals: | Silicone |
| Bearings: | Oil Impregnated Bronze |
| Stops: | Full Open and Full Closed Angle |
| Actuator: | Electric or Pneumatic Factory installed for power-open/spring-close (fail close) operation External Left Hand Mount Standard Right Hand Option |
| Finish: | Mill |
| Max Differential Pressure: | 4 or 6 in. w.g. |
| Max Velocity: | 2000 or 3000 FPM |
| Leakage Rating: | 8 cfm per ft2 Max at 4 in. w.g. |