Zkteco LMB-180U U-bracket FOR MAGNETIC LOCK brackets are sold in kits containing both L and Z brackets. They are strong, reliable and well priced! L & Z Brackets are required for Inswing Door Applications. The “L” bracket is used to mount the magnetic lock above the door and the “Z” bracket attaches to the door to line up the armature plate with the magnet. They are used for the conversion of standard out-swing locks to suit for in-swinging applications. Our brackets ensure the magnet remains on the protected side of doors. The L-bracket is used to fix the magnet to jamb for suiting typical outward opening door applications. Brackets are required to be paired with our Magnetic Locks for in-swing door applications. Our magnetic locks are excellent for low, medium and high traffic areas, such as offices, convenience stores, building entrances, and exits.