There are so many different types of commercial door locks. The lock that you select is very important because it is the first line of defense when an intruder comes to your office building after hours.
Some of the most recognizable manufacturers of commercial door locks are Corbin Russwin, Best, Tell, Yale and Simplex. These are all great companies that will product good quality product. Of course choosing the best one for your door will be determined by your specific needs.
I suggest that you begin searching on the internet. There has been an increase in door hardware companies online over the last few years, so you will not have a problem finding the right commercial door lock for the right price. But before you do this you should first make a list of what you are looking for. This is going to help you to narrow down your choices.
If you are looking for an increase in security level for you door than you will have no problem finding a large amount of enhanced systems that will greatly increase the security level of your door.