Composition of the structure: same as the CTA structure
Base: same as the CTA structure
Head: same as the CTA structure
Stringers: horizontal, 10/10 thick, suitably moulded using a folding press so as to form a "U" with sides of 18x25x18 mm, fitted with anti-static, airtight and dust-proof gaskets guaranteeing the stability of the whole.
Adjustment system: same as the CTA structure
