G-iron Flex is designed to block AC Magnetic Fields produced by the flow of electrical current. These fields are commonly produced by Power Lines on the street and entering your house, household appliances, electrical wiring in household walls, circuit breaker panels in the home, transformers etc. Unlike other types of magnetic field shielding, G-iron is very flexible and does not lose its shielding properties when bent or moulded to various shapes. As a result, this product is an excellent choice for many shielding applications. There are multiple configurations that can be used to enhance the shielding power if required.