Cylindrical locks are the type of locks found on doors in most commercial buildings. They're less expensive, easy to install and replace and can be rekeyed. Mortise locks, on the other hand, are a bit more expensive and require a pocket to be cut out of the door before it can be installed. Mortise locks offer the flexibility of extra features like occupancy indicators or ADA thumbturns. Locks that offer more security are keypad door locks or push button locks. Regardless of the lockset chosen, there are many accessories to choose from like dutch door bolts, lockset cylinders and privacy door latches.