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0,5 mm x 50 cm x 20 cm sheets.
if you need bigger tham 20 cm I can get it.
Adicional data, for 30 keV ( Sn Xray )
Half Value Layer Thickness of Cu is 0.07 mm,
this means that 0,5 mm Cu = 7 HVL
Proportion of Energy Absorbed = 99.2 %
