We supply a product line of special flanges covering the waveguides sizes from WR 650 to WR 22 for radar or space applications. These units meet unusual electrical or mechanical specifications.
| Waveguide | Type A | Type B | Type C | Type D |
| WR 22 | BRSA22 | BSRB22 | BSRC22 | BSRD22 |
| WR 28 | BSRA28 | BSRB28 | BSRC28 | BSRD28 |
| WR 34 | BSRA34 | BSRB34 | BSRC34 | BSRD34 |
| WR 42 | BSRA42 | BSRB42 | BSRC42 | BSRD42 |
| WR 51 | BSRA51 | BSRB51 | BSRC51 | BSRD51 |
| WR 62 | BSRA62 | BSRB62 | BSRC62 | BSRD62 |
| WR 75 | BSRA75 | BSRB75 | BSRC75 | BSRD75 |
| WR 90 | BSRA90 | BSRB90 | BSRC90 | BSRD90 |
| WR 112 | BSRA112 | BSRB112 | BSRC112 | BSRD112 |
| WR 137 | BSRA137 | BSRB137 | BSRC137 | BSRD137 |
| WR 159 | BSRA159 | BSRB159 | BSRC159 | BSRD159 |
| WR 187 | BSRA187 | BSRB187 | BSRC187 | BSRD187 |
| WR 229 | BSRA229 | BSRB229 | BSRC229 | BSRD229 |
| WR 284 | BSRA284 | BSRB284 | BSRC284 | BSRD284 |
| WR 340 | BSRA340 | BSRB340 | BSRC340 | BSRD340 |
| WR 430 | BSRA430 | BSRB430 | BSRC430 | BSRD430 |
| WR 510 | BSRA510 | BSRB510 | BSRC510 | BSRD510 |
| WR 650 | BSRA650 | BSRB650 | BSRC650 | BSRD650 |