Magnetic Lock Bracket: U-type Bracket for Magnetic Lock, suitable for 180kgs (400Lbs)– Suitable for 180kgs (600Lbs)– Z-Type & ZL-Type Bracket suitable for Inward  Wooden Door & Metal DoorUse together with EM LockWeight: 0.7 KGEasy installation without special toolsHigh Strength Material, Anodized Aluminum Housing.https://www.youtube.com/watch?v=k0MEFaiL878