The Securitron SEP-1 Electromagnetic Lock Hardware Pack is built with a heavy-duty design for enhanced security and durability. It easily installs within the edges of doors and frames, offering broad compatibility with almost any door type featuring butt hinges, continuous hinges, or pivots. Please note, it is not compatible with pivot hinges or center pivot doors. A flexible steel shield with a 1/4" diameter protects the wires, ensuring long-lasting performance. This near-universal device is a reliable choice for securing various doors. Upgrade your security with this dependable lock, order now!