Lock and fitting dimensions
| Specifications | Dimensions from model documentation |
|---|---|
| Backset (original specification) | 2-3/4" (70 mm) only |
| Lock case dimensions (original specification) | 4-7/16" x 3 5/8" x 1" (113 mm x 92 mm x 25 mm) |
Check the backset, centre distance, faceplate and mounting points against the specific model drawing.
Browse related directorySpecifications
- Backset (original specification)
- 2-3/4" (70 mm) only
- Compatible door thickness (original specification)
- 1-3/4" (44 mm) standard (minimum); specify door thickness if over 1-3/4" and position in door (EE, EI, EO, ED)
- Lock case dimensions (original specification)
- 4-7/16" x 3 5/8" x 1" (113 mm x 92 mm x 25 mm)
- Lock case material (original specification)
- Cold Rolled Steel (CRS) with corrosion resistant zinc dichromate plating
- Deadbolt (original specification)
- 1" (25 mm) throw stainless steel
Applications and series scope
A mortise deadbolt series with a small case. Check available space within the door leaf and the cylinder position.
Using specifications for selection
Read standard configurations separately from optional ranges in the specification table. Fields marked “original specification” retain English wording and original units for comparison with the manufacturer's documents.
For a specific function within a series, check door thickness, mounting construction and system connections against the full ordering code. The main image identifies the series appearance and does not replace an installation drawing.
Sources and image notes
A series may include different functions, trim and cylinder options. When comparing products, first establish the required door operation, then check whether the specific accessories are included in the ordering configuration.
Follow the official document links for model lists, installation requirements and drawings. Electrified locks also require checks against the power supply, controller and local system requirements.
Limitations
- Summarised from the official series detail page. Not every combination in the door thickness, function or option is treated as a standard configuration.
- The image shows a representative configuration from the official series page. Colour, lever and cylinder form are as pictured in the original image.
- Check current model availability, certification scope and project installation requirements separately.
Sources
Schlage official product page: L400 Small Case Mortise DeadboltManufacturer documents are provided in their original language.