On Jul 29, 20:17, Eros, Anthony wrote: source That's not very much bigger than mine. I got mine from someone (in the UK) who clears commercial/industrial buildings before they're reused or demolished. It was very cheap (compared to new prices) but there was a fair amount of work involved in cleaning the glue off the old supports, checking all the screw threads, cutting the supports to the right length [1], sorting out the damaged/warped panels [2] and those that were slighly odd sizes (mine are nominally 600mm square but a few turned out to be 590 x 600 or 610 x 600, presumably for edges). And don't forget that you need different supports for edges and corners, for most types. BTW, the same source I used had lots of fancy lighting fittings, suspended ceilings, air ducting and fittings, electrical fittings (including floor boxes), doors, etc at knockdown prices. Since there's a lot of metal in the supports, and the panels are normally steel-clad, you might indeed find something at a scrapyard, as Sellam suggests. One of my friends got secondhand flooring from a university that was moving its computer room. Ask around -- I've heard of places that take up the floor and fill it in with concrete screeding to reuse the room. If you can make your want known before that happens, you have the opportunity to remove the panels and supports. If you get second-hand flooring, mail me for tips. I now know more than I really wanted to about the do's and don't of secondhand computer floors :-) It *is* worth doing, though, if you can find some. I'm really pleased with mine now it's all done. [1] You might not have to do this -- my floor had originally been raised about 20" high and I only wanted a little over 6". [2] The panels are pretty heavy, and if not stacked sensibly -- mine were in 8' high stacks -- they have a tendency to warp over a long period of time. Warped tiles mean uneven floors or tiles that rock slightly. -- Pete Peter Turnbull Dept. of Computer Science University of York