Identify whether the supplied product matches the ordinary existing lockset arrangement. Similar handles can conceal different mechanisms. This task excludes emergency entry, key cutting, rekeying, specialist security advice and powered access systems; it starts with authorised access to the door.
The distance from the door edge to the operating centre affects compatibility. Share the product drawing and existing measurement if safely available. An incorrect backset can place the handle or mechanism against old holes, so check before purchasing a replacement.
The person arranging the job must have authority for the property and hardware change. For a rental or managed property, agree the appropriate permission and access contact. An enquiry does not establish ownership or authorise gaining entry to a locked property.
Replace suitable ordinary mechanical hardware in the compatible existing preparation and check its operation with the authorised customer. Scope limits: Authorised ordinary compatible mechanical lockset replacement only. No lockouts, emergency entry, key cutting, rekeying, locksmith security services, rated-door work or electrical integration.