When you pull it out, what kind of hardware do you see, like drawer slides? They might be on the sides or under the main pull-out, or both. Usually these have some kind of spring clip which lets you lift the moving section up off the slides.
If the slide hardware is under the pullout pantry, you can hold a phone camera down there, pointing up, and get some photos of the hardware, after you have it out, or at least partially out. Once you figure out the system, you can usually do the release "by feel," like we have to do with our FC20 drawer slides.
There should be a mfg. name on any parts you can see IMO.
PS -- These search results for "25' pantry slides" may lead somewhere productive IMO:
Like here? http://www.airforums.com/forums/f44/...de-104290.html
Or here? http://www.airforums.com/forums/f38/...es-102856.html
Do the slide photos attached to the following post in the first thread above look right?
[click on orange arrow in quote to see photos]
Originally Posted by wanderingduo
We seem to be in this boat too. Spilled some salt in the pantry cabinet and a few months later we are seeing and feeling the full blown effects on the lower slide. I had to remove both the bottom and top slide to get to this. The brand is Schock Metal, and they don't seem to sell their products through retail. Did anyone else have luck replacing these slides with a soft close, full-open kind? I would like to replace it with one that can be disconnected with a lever so it's easier to clean in the future. And if if not, did you find the replacement slide locally? What brand, were they? This one is 22 inches in length.