Our dome frames are made from galvanized steel. The steel, in conjunction with the geodesic design, creates an amazingly strong structure using a minimal amount of material. Geodesic domes are world-renowned for their strength and integrity. Depending on your situation and needs, we offer ‘Extreme’ 1.9”, ‘Burly’ 1.66, ‘Heavy Duty’ 1.31”, in addition to our ‘Standard’ .92” frame.