LePvo 90/180 Degree Flip Barn Door Lock, Protect Privacy - Security Door Latch, Small Gate Latches Hardware for Barn, Garden, Bathroom, Cabinet, Window, Sliding Door (Black-1PC) Quick to Install and Maintain :The barn door lock is suitable for left or right installation, and installation at an angle of 90° and 180°. Simply fit the door latch lock to your door frame, mark the height and mounting holes and mount to your door jam with the supplied screws.