Most locks are designed so that re-handing is not required. Some locks that do have a re-handing process are done by a simple adjustment.
Delf - All products can be both left/right handed
Lane - Most products can be both left/right handed
The Lane locks that cannot be re-handed are the Victoria and Montebello dummy handles
Lockwood - All products can be both left/right handed
Please note the Nexion and Unity lever will need to be re-handed on site