The most preferred gates to protect businesses! Illinois Engineered Products (IEP) is your No. 1 Loss Prevention Solution. Provide a safer, better ventilated, and more secure location. Their 100% American-made galvanized steel folding gates are the strongest folding gates you can buy – and IEP manufactures the original Heavy Duty Galvanized Steel Folding Security Gates. The gates stand up to weather, rust resistant, and they look better and last longer! Their galvanized coating bonds to steel 10 times stronger than paint; that means their products are virtually maintenance-free. They also feature recycled materials in their extensive portfolio of products!