DOUBLE COVERING WITH HOOKS
covering thick: cm.2
- slab: cm.57x40x1 or cm.57x30x1
for more specifications
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cm.23 cm.30 or cm.40 more 50%  of (B) cm.57 cm.34 cm.23 cm.60/70 cm.4x3 cm.30 or cm.40 cm.11 hook cm.23