Rackmount Sliding Rails - Kit for 2U-8U Chassis (Adjustable 18" to 25" Depth) 2 or 4 Post Mount Sliders for Server Case (Compatible with Any Standard Rack, Cabinet, Computer Enclosure) Tupavco TP1821

These were a great non-oem option for my supermicro 2u nas.I was worried about the weight at first, but they attached easily and feel strong when pulled out.The slide with little reaistance and won't return without help so no smashed fingers.I'm using a homemade rack (2x4s and posts), and they fit well.Great value for me.

The rails are easy to assemble and install and cover a wide depth range for many different racksHowever, on the 3 different server chassis i tried(siverstone, chenbro, and iStarUSA) it was impossible to get the rear of the server to clear the front of the rails where they mate with the rack making them useless.This is because the rails are too wide by about 2mmThe upside of this is that you could effectively turn a single 4 post rack into two, by having servers hanging off both the front and rear of the rackThere is a possibility that my ProConnect 27 U enclosed rack is off spec, but i went through the trouble of loosening as many screws and bolts as possible in the hopes that i could massage things into place, and i have other rails that were not too thick to slide in servers, but were too long to close the door on the rack.Update: I've come across 2 server chassis that do fit within a rack using these rails with alot of effort, both from i-star(one of them was the istar listed above), however, it does require uncomfortably slamming them into the rack several times to get them to slide in and out without grabbing a winch, do not push them all the way in flush with the rack ears until the rails have been warn in properly, you'll genuinely need a winch or something with alot of leverage to get them to grind back out.Once it has been warn in it mostly rolls smoothly, not to the level of the dell readyrails but better than i would have expected after hearing the grinding from wearing them in at first.With the silverstone case i have, there is just no way to get it to fit no hammering or chizling can change that if i could maybe put it in the center of the rack maybe the ears could flex enough as the ears are only supported(from the sides) at the top and bottom

I thought I'd give these a try with a full size 29" depth rack... they fit, but just barely. The reach L-bracket is as far back on the rail as I could get it. Definitely not ideal, and not sturdy enough to hold anything of significant weight at that point - and they won't slide out very far. The product page does say these support up to a 25" depth. Even at 25", these still wouldn't extend out as far as some others. These would work best on smaller depth racks, allowing the mounted device to slide out far enough. Anything else and these are likely only good for smaller devices, like a switch or similar. They are well greased though, and the sliding operation is nice and smooth. They do seem well built, but I think you'd need about a 20" depth for these to work best. Also, it doesn't seem mentioned on the product page anywhere but the mounting hardware (screws) that come with these are built for M4 cage nuts rather than M5.

These rack rails work great for a shallow depth rack mount device. Tolerances are tight and once installed the rails worked smoothly.

I found it impossible to install using the hardware and instructions provided. Maybe I was missing hardware? Gave up and installed it using my own hardware only to find it was too narrow for my rack and/or case. It looks/feels like it would work well if it would actually fit in my setup.

These are too small to be a strong mount. On top of that they don't pull out far enough to be useful. Using a Rosewill 4U case.