Project Steel Door Lock Systems
Project Steel Door Lock Systems should be matched to the project-door series as well as the actual lock arrangement. The category contains separate real products for 3N, 4N and 5N, making the existing door series the first compatibility check.
Manufacturer information for 3N, 4N and 5N project lock systems identifies 252R/257 and 292RD/287D arrangements as standard, while other lock options may be optional. The actual lock fitted to the door should therefore be confirmed rather than inferred from the series name alone.
3N Project Lock Systems
For the Kale Steel Door 3N Project Lock Systems, confirm that the door belongs to the 3N project series and that the main/auxiliary lock arrangement and mounting points match.
4N Project Lock Systems
The Kale Steel Door 4N Project Lock Systems should be treated as a separate project series. Do not assume a similarly named 3N or 5N product is directly interchangeable.
5N Project Lock Systems
For the Kale Steel Door 5N Project Lock Systems, check door-series identification, body and strike positions, cylinder and set contents together.
Standard and Optional Lock Arrangements
Manufacturer information lists 252R/257 and 292RD/287D arrangements as standard for these project system pages. Other lock options can depend on the door model, so identify the actual mechanism before replacement.
Door Model and Lock Matrix
Different door models within a project series can support different lock options. Where possible, identify the door model and verify the replacement against the manufacturer's lock matrix and actual dimensions.
Set and Spare-Part Scope
A complete project lock set is different from a main lock, auxiliary lock, cylinder or strike sold separately. Confirm which components are included and which existing parts will remain in use.
Related Lock Systems
For Classic, Super and Champion systems see Steel Door Lock Systems, or return to Steel Door Locks.
Project Steel Door Lock System Prices
Prices vary by 3N, 4N or 5N series, main and auxiliary lock scope, cylinder, strikes, fixing parts and installation requirements. Compare quotations on the same door series and component scope.