How many different kinds of door hinge hardware are there?

There are many different sizes and brands, it depends what specifically you are looking for.

If you go to our website you can see what I mean.

Click on our link www.wackerhardware.com and look at the "vendors" section. In that section click on "Hager" as this is the most common and dependable industrial hinge.

Hopefully this will answer some of your questions.

Thanks!