This unique invention has been designed in response to requests from homeowners and alarm installers for a magnet that would allow sliding window and door venting. Magalignâs patented magnetic assembly allows up to 6â of continuous controlled movement without breaking the alarm contact. This allows homeowners the ability to arm their system while still permitting the venting of a window or door. A perimeter opening so equipped can be opened to 6â or closed while the system is armed without tripping the alarm system. The magnetic assembly maintains an extended influence of approximately 6â wide with a 1â vertical gap.