Commercial grade door hardware can be used for any residential application but has been tested based on performance benchmarks: Operational, Strength, Cycle, Security, Material Evaluations, and Finish, where products receive Grade 1; the highest grade possible; Grade 2, or a Grade 3.
The locking mechanism is important to know if you are replacing a door handle or adding reinforcements to secure your door. These options will help you choose the right lock to secure either your interior, exterior, or sliding doors.
This helps distinguish door hardware that can be used in either commercial or residential applications. Commercial grade door hardware can be used for any residential application but has been tested based on several performance benchmarks. Residential door hardware, on the other hand, still of high quality but is designed to withstand everyday normal wear and tear.