@3rail posted:From what I can tell, no it is not. There is some aluminum shelving out there that has a flat base with a lip. It appears to be just that. I do not see the 3 raised lugs that the GS shelves have.
Donald
Rail Rax was an alternative but appears to be NLA. At this point it appears your only source for either will be the secondary market. Both show up from time to time on the auction sites.
Pete