Magnetic Shielding Foil is used for shielding DC, ELF and VLF magnetic fields. The product is generally used in factories to shield delicate electronic components from EMF Pollution. It is an 80% nickel alloy and it is 0.004” thick and this is why it can be easily trimmed with scissors and can be shaped with hands. It is used to form magnetic barriers on cellular phones, microwave ovens, doorbell transformers and more. It works best against the weak and moderate levels of magnetic fields in mili gauss levels. Using the product in multiple layers enables it for greater reduction. You can order Magnetic shielding Foil in any length. The gauss meter is recommended to determine proper shape and positioning of the product.