Air Condensers, "GWL.
| Cat. No. | Socket | Cone | Effective Length mm. |
| GWL350/1 | B 14 | B 14 | 200 |
| GWL350/2 | B 19 | B 19 | 200 |
| GWL 350/3 | B 24 | B 24 | 250 |
| GWL350/4 | B 19 | B 19 | 400 |
| GWL350/5 | B 24 | B 24 | 500 |
| GWL350/6 | B 34 | B 34 | 500 |
| GWL350/7 | B 19 | B 19 | 600 |
| GWL350/8 | B 24 | B 24 | 750 |
| GWL350/9 | — | B 19 | 750 |
| GWL350/10 | — | B 24 | 750 |
| GWL320/11 | — | B 19 | 1000 |
| GC701/12 | — | B 24 | 1000 |
