APC SU032A 4-Post Rackmount Rails

Perfect for the need. The APC is heavy and obviously goes on the bottom of the rack. The pictures don’t make it obvious for installation but it’s surprisingly easy. The APC needs these ears like things that slide into the rack slots and the front of the rack has a bit of a shelf like aspect that supports a lot of the front of the unit’s weight. No issues after a few months in place.

Bought these after the first set from the manufacture failed. These turned out to be great yes they are third party but I recommend them.

Nice piece of hardware which turn you non rackable UPS into a rackable one. I'm really happy with this product. :)

Look elsewhere for a set of generic rack rails. These are not the rails you are looking for. First, they come with threaded inserts in all the mounting holes in both the front and rear ears. I believe they are #10-24 or #10-32 so if you have a rack with M5 or M6 threaded holes, you're not going to have a good time. If you have a rack that takes cage nuts, you can use #10-24/10-32 cage nuts if you have them on hand - I didn't. Even if you do have the proper size threaded rack holes, I remain unconvinced of the wisdom of threading a screw first through the rail ear then the rack - there will almost always be a gap between the two because the threads won't align. Next, the hardware that comes with the rails does not match the text-free installation guide for the illiterate - the hardware I received included countersunk screws and countersunk washers, as well as 4 each captive (G-type cage) nuts. The installation guide would have you press the backside of the threaded inserts, which are proud of the ears by about 1/16", against the outside faces of your rack, so that each ear is proud about 1/8" from the rack. Any ears on the equipment you place on the rails will be proud of the rack by this much plus the height of the screw heads used to hold the rails in place. And because the rails mount to the front and back, they take up enough space between your rack edges that any tight fitting equipment will not fit between the rails. Finally, the shelf formed by the rails is off of the U spacing by a height of about 1/8". If you plan to just drop a box in place on the rails, it will stick about 1/8" into the next U space. If you plan to bolt in the ears of the equipment on these rails, the offset is enough that it must sit on a spacer or shim, and it will mount 1 bolt hole high. I managed to make these rails work in my cage nut rack by mounting them inside the rack, with screws and washers holding the rear ears in place. I also reversed the front and back so that the shelf of the rails was towards the front of my rack. Then I mounted them one screw hole low, so that with a shim, a 2U case siting on the rails would be in the right position. Then used the small countersunk screws to set the front ears, because the screw heads fit into the rack's square holes and would be flush with the rack edges - but they will not take any load. Then I put cage nuts in the rack holes directly above the front rail ears. After I slid the case into the rack, I used two #10-24/32 bolts on the bottom holes of the case ears to thread through the rack and into the threaded inserts in the rail ears. Then I installed two M6 (in my case) screws through the top holes of the case ears into the cage nuts above the rail ears. And I put a shim spanning across the rails under the back of the case. After all this, I can say these rails are quite sturdy, but I'm glad that I only have to do this once. If there is an easier way to use these rails generically, please let me know.

These are nice, heavy duty, easy to install shelf rails that fit a wide range of products, both APC and others. I have several sets of these holding up APC UPSes, Norco 4U server chassis, AIC 4U server chassis, QNAPs, LaCie NASes, and other hardware that doesn't have proper rail kits. These do not fit properly with 2U Dell PowerEdge servers, as the steel is too thick and sticks inward too far for them to fit right. It can hold them up but it's at a goofy angle. If you want to mount a 2U PowerEdge, get the rail kit for your server. The steel on these is very thick and can support a lot of weight, I have seen half a rack worth of servers stacked up on one set of these (though I wouldn't recommend doing that).