Opening for supply lines

GermanDomes - Glaskuppel, Glas Domes, Geodomes, Geodätische Kuppel, Geodesic Domes

Hole drilled in the factory through both ring sections for the passage of water and electrical supply lines from the outside to the interior of the dome. When not in use, the hole can be closed with the plug supplied. Hole size of the bushing: 25 mm