Accuride 3832 Slides

I've looked at there web site and I can't figured out mounting specs. I've never worked with these, so how to.........

1. If I want to put slides on the bottom of a cabinet, can I mount the slide right down on the bottom of the cabinet, or do I need to raise them a little bit?

2. How do you figure out how high to place the center/slide piece on the drawer? is it a standard distance from the bottom of the slide?

Thanks

(.-.)

Accuride 3832 Slides