Manual Shutter

Viewport can become contaminated from the coating material. Shutter is used to prevent deposition onto the viewport, thus preserve the quality of viewport.
| Material | 304 |
| Max. Bake temperature | 250° C |
| Operating temperature | 120° C to 150° C |
| Pressure range | 1×10^11 Torr |

| P/N | Flange | A (inch) | A (mm) | B (inch) | B (mm) |
| STR-CF2.75 | CF2.75 | 5.98 | 152 | 2.72 | 69 |
| STR-CF4.5 | CF4.5 | 7.76 | 197 | 4.49 | 114 |
| STR-CF6.0 | CF6.0 | 9.25 | 235 | 5.98 | 152 |
| STR-CF8.0 | CF8.0 | 11.22 | 285 | 7.95 | 202 |
Pneumatic Shutter

| Adjustable stop | Yes |
| Flow regulator | Standard |
| Solenoid operated | 100 psi max |
| Bake Temperature | 150° C |