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.
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.
Keep the strike, fixings, instructions and all compatible fittings with the new lockset. Missing components can prevent installation even when the main body is present. Do not assume unrelated spare screws or old fittings will meet the new product’s requirements.
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.