The term door plate has two different meanings.
On the one hand, door plate denotes a cover plate over the recesses in the lock area of the door leaf or door leaf with a guide bearing for the door handle . The guide bearing gives the door handle the axial and radial seat. A distinction is made between a long plate and a short plate. Name of the door plate / door rose parts and their abbreviations according to DIN 18 255:
- Long shield = L
- Short shield = K
- Door rosette = R (for door rosette )
- Door handle rosette = DR
- Key rosette = SR
- Profile cylinder perforation = PZ (for profile cylinder )
- Tumbler perforation = BB (for a tumbler lock )
- Special perforation = SO (e.g. for oval cylinders)
- Use in living areas = Where (low stress, low frequency of use)
- Use in the commercial sector = whether (high stress, high frequency of use)
On the other hand, the door plate can be a name plate that is attached to or on the door; it bears the name of the resident or user or the name of the room to which the door leads.
- DIN German Institute for Standardization eV: DIN 18255: 2002-05: Building hardware. Door handles, door plates and door rosettes. Terms, dimensions, requirements, labeling , Beuth-Verlag, Berlin 2002. The plural "door plates" used in the title and throughout the text shows neuter gender
- DIN German Institute for Standardization eV: DIN 18255: 2002-05: Building hardware. Door handles, door plates and door rosettes. Terms, dimensions, requirements, labeling , Beuth-Verlag, Berlin 2002, p. 6, table 1