Magnetic Shielding Foil | 15" WIDE x 1 Linear Foot LONG Flexible Shield from Magnetic Fields Great for shielding from: DC, ELF & VLF Magnetic Fields Wrap your desktop computer with the Magnetic Shielding Foil, Easy to trim with scissors and shape by hand Very flexible & thin (0.004" thick) IMPORTANT! Note that this product now is 12 inches wide and sold per linear foot!!! 75% attenuation of the magnetic fields with one thickness. SOLD per LINEAR FOOT.