Made of plastic. For use with Venturi louvered vents GS31195-GS31196
| Ref. | For systems. | Pack. |
| GS31197 | 76 mm / 3’’ | 1 x bag |
| GS31198 | 102 mm / 4’’ | 1 x bag |
€6.63 – €23.18 exc. VAT
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