+ H20 beam(I joist beam) + LVL BEAM + LVL Scaffolding Board + Plywood + OSB(Oriented Strand Board) Prouduct 12*1220*2440 OSB2 1250*2500 oversize OSB 18MM OSB for furniture EN300 standard OSB3 fo OSB (Oriented Strand B 45*290mm F11 Pine LVL 45x90mm Pine LVL beam F17 Structural LVL wit AS/NZS4357 F17 Structu 4mm veneer okoume plyw 12mm radiate pine plyw radiate pine plywood t 12345 > >