1 inch = 2.54 centimeters
| WR # | Inside Dimensions(in) | Inside Dimension (mm) | Frequency Range (GHz) | TE10 Cutoff (GHz) |
|---|---|---|---|---|
| WR-284 | 2.84 x 1.34 | 72.13 x 34.04 | 2.6-3.95 | 2.07941 |
| WR-229 | 2.29 x 1.15 | 58.17 x 29.21 | 3.3-4.9 | 2.57882 |
| WR-187 | 1.872 x 0.872 | 47.55 x 22.15 | 3.95-5.85 | 3.15465 |
| WR-159 | 1.590 x 0.795 | 40.39 x 20.19 | 4.9-7.05 | 3.71416 |
| WR-137 | 1.372 x 0.622 | 34.85 x 15.80 | 5.85-8.2 | 4.30431 |
| WR-28 | 0.280 x 0.140 | 7.1 x 3.6 | 26.5 - 40.0 |