***** **********Best Quality Guranteed. *****"Z" & "L" magnetic lock special stent for 350-lb series electromagnetic locks (Indoor) *****Special aluminum, firm and durable*****Special design, suitable with wooden door and metal door*****It is easy to install and convenient to use*****Includes one "Z" bracket and one "L" bracket for mounting on inswing doors. The "Z" bracket consists of two parts and is adjustable for flexible positioning of the armature plate.