I have used the blum blumotion ones. They are full slide out, and they have to be the depth of the drawer. They give pretty precise measurements for the drawer dimensions. They are sort of quick release, and the front latch sits in the front corners of the bottom of the drawer, and the back is a pin that sticks in the back corner, so they need to be the right size. I think most are like this. If you already had drawers that were say, one inch too long for the slide, you could glue a one inch strip to the bottom back on the inside and pretend it was the back of the box, but then you lose an inch of travel. I think the apothecary listed in my pics has some pictures of them.
PS - Not cheap, but I love those blumotion soft close ones.
Last edited by icrusbound; 06-07-2011 at 12:46 AM.