| Diameter (inches) | 1 |
| Diameter (mm) | 25.4 |
| Dimensional Tolerance (mm) | ±0.3 |
| Thickness (mm) | 1.5 Nominal |
| Index of Refraction nd | 1.501 @ 20°C |
| Abbe Number (vd) | 57 |
| Transmission (%) | >90 |
| Density (g/cm3) | 1.320 at 20°C |
| Substrate | Thermoset ADC (CR-39®) |
| Operating Temperature (°C) | 100 Continuous, 130 One Hour Max |
| Coating | Uncoated |
| Color | Black |
| Type | Longpass Filter |