The installation process depends on the type of door knob. For dummy knobs/plates, a threaded bolt is attached to the door, and the plate simply fastens to the door using the four provided screws. The knob screws into the threaded bolt, hand tightened, and secured by a threaded hex screw. The toughest part of this install is aligning the plates so they are the same height on both sides of the door. For double doors, it also has to align on the opposing side. If you have one, a laser level is very helpful.
For passage and privacy sets, they require the door to have the bore hole and cross bore hole cut. If not, they give you a paper diagram you can use to make sure everything is aligned properly. But for us, we already had the holes cut. These kits come with a latch, latch strike, and mortise plate (all in matching finish/color). The installation process is pretty straightforward, and the directions are clear.
Installation Tip: Make sure you loosen the connection on the back – otherwise the brass door knobs will stick when turned. We found this out the hard way but loosening that on both sides before install solved the problem.
For the privacy set, there is an extra piece that is used to lock and unlock the latch. Just be sure to install this piece in the correct position so the lock is on the inside of the room. Always test the latch locking and unlocking before actually closing the door.