Go Rhino Rear Cab Window Guards protect your rear windows from uncooperative prisoners. They are compatible with factory, AEDEC, and Go Rhino Public Safety Door Panels. There are pre-drilled holes in the frame to allow for a quick and easy installation. You can choose a mesh steel or polycarbonate window guard. The mesh steel bars are made of 3/8-inch steel and the frame is made out of 16-gauge steel. The polycarbonate window guard has a frame that is constructed out of 16-gauge steel. | Go Rhino Rear Cab Window Guard 571918