Pure copper is a material which is made of natural copper, there are also trace amounts of other elements so it cannot be said that pure copper is 100% copper. The approximation of natural copper in pure copper is up to 99.98%

16x16mesh technical parameter  

mesh: 16 holes per liner inch

wire diameter: 0.011inch(0.28mm)

opening width: 0.0052nch(1.32mm)

open area: 68%

weight:0.70kg/m2

The 16mesh is widely used for protecting equipment from Radio Frequency Interference (RFI) or Electromagnetic Interference(EMI). it also called Faraday Cage and copper box cage...