In order to block ELF EMF/EMR fields efficiently either the ELF source should be completely covered or the ELF blocking material should be applied to create a large blocking surface (since ELF magnetic fields tends to work their way around obstetrical).
For example in a case of an Electric meter and fuse box (in Red color) that emit high levels of ELF, the ELF protection(in silver color) should be applied on most of the wall. The only way to know how big the protection should be is to use an ELF EMF/EMR meter before, during and after the protection is applied. If after the installation of the ELF EMF/EMR bocking protection there is still ELF coming from the side of the ELF EMF/EMR protection you need to put more ELF EMF/EMR protection on the sides (Left, Right, Up and Down). If there is still ELF EMF/EMR coming via the center of the ELF EMF/EMR protection you will need an additional layer of ELF EMF/EMR protection
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ELF EMF/EMR BLOCKING MU-METAL
Price (including Free World Wide delivery)- US$180 Per running/linear meter (roll wide is 45cm)