There are some things to consider when riding an old door with a new command. Remove the doorknob. According to Bob Vila, is beneficial to note the direction of the knob rotates when you take it out. Identify that exterior or interior door knobs and lock-set you have. Blocking whole is more than the locking knob. According to Tim Carter, there are two basic types: cylindrical and mortise. Shroud-sets are identifiable by the large required for installation of the box containing the locking cavity.
Identify the type of doorknob she has. There are four basic types according to WiseGeek and interior door knobs are fictitious, keyed knobs, dials and knobs passing privacy. A dummy knob is a knob operation used not just for looks. Key knobs require a key for entry. Passage Knobs have no locks, knobs and privacy are blocking only inside.
Measurements of the door such as the door depth, and the distance between the center of the knob and the door edge. Also measure the hole from which the command was removed. In the oldest houses of this hole is often less than the standard. Take note if the door opens inwards or outwards. This determines if you need a right or left interior door knobs.