I would have given this a 5. But one thing-
This is well-engineered and went together very well. Everything fit just right. It is very sturdy and it's easy to work with. The only real issue I have is that the cage nuts are not a standard size. I really like Rack Studs and bought them ahead of time to use on this new project. However, they don't fit. The punchouts for the cage nuts are too small for standard cage nuts. So I am forced to use this mfgs cage nuts. Not a deal breaker, but it will hurt in the long run should I lose any and need more. Rather than 9.2-9,9 mm, they are 9mm or smaller. Too small. If you intend to use anything other than their cage nuts, good luck.

This worked a treat for our little NAS, UPS, and networking gear. I've still got room for expansion if we need a DAS or another server in the future.

A lot of reviews mention alignment issues during assembly. Either it's gotten better or I was careful enough not to encounter many problems. When you're putting together this kind of thing, it's best to put in all the screws for a piece, but leave the last few turns until all the screws were in. The only alignment work I had to do was in the final steps of attaching the top, where I needed to push one corner against a wall briefly to adjust it slightly. Once together it was very solid.

I agree with other reviewers who say that the metal is extremely soft, both for the rack and the screws. If you cross-thread a screw even slightly the screw is immediately ruined. You should not use a power drill or impact driver for this unless you're extremely careful. I used a cheap rechargeable screwdriver from NoCry I got on Amazon, and it worked out great.

The rack metal itself is soft enough that I would not ear-hang anything even moderately heavy, for fear of fatiguing the mounting points.

But for the price, I'm very pleased with it. You can get better for $100 more, but you could also spend that $100 on something you won't be throwing into a basement.

SO, believe what you read in the other reviews- the instructions are absolutely garbage but the design/fabrication of this unit is great at this price point. Overall I am very happy with this product, the materials are all heavy gauge steel, the powder coating is pretty durable and is consistent on all components.

Some things to watch for:

1.) The fabricator must have assumed watch-maker type precision with the post base/outrigger assembly, meaning that there is absolutely NO overhead on tolerance so you MUST loosely fit-up all screws before tightening ANYTHING.
2.) You will need an allen key (6mm I think) with a 1" right-angle tongue or a straight 4"+ long stem to reach through the outrigger to fit/tighten the horizontal screws on the post base
3.) The mounting flanges for the tower rails that are permanently attached to the stretchers that screw to the wheeled outriggers are asymmetric, meaning there is an "outside" and "inside" face on both the flanges and the posts (the square holes on the posts must face outward to properly install the cage nuts & rack shelves)- you may notice this on your own prior to assembly but if you don't and you attach the stretchers to the bottom outriggers with the "wrong" side out, you will wind up taking the thing apart as some, but not all of the holes will line up when you go to install the tower posts.
4.) You should use a nut driver for the rest of the post-attachment and cap hardware- the screws all come with philips head slots but they're a little soft and will strip out quickly if over-torqued with any electric tool assisted assembly
5.) The assembly instructions omit the use of the cage nuts to attach the included shelf slides- you want to use the cage nuts for this as the slide-mount holes on the posts are square- the included normal/hexagonal nuts & bolts will not have enough bearing at these locations without adding a fender washer to the nut side, but why would you want to go and buy extra hardware??

I would have given this a 5. But one thing-
This is well-engineered and went together very well. Everything fit just right. It is very sturdy and it's easy to work with. The only real issue I have is that the cage nuts are not a standard size. I really like Rack Studs and bought them ahead of time to use on this new project. However, they don't fit. The punchouts for the cage nuts are too small for standard cage nuts. So I am forced to use this mfgs cage nuts. Not a deal breaker, but it will hurt in the long run should I lose any and need more. Rather than 9.2-9,9 mm, they are 9mm or smaller. Too small. If you intend to use anything other than their cage nuts, good luck.

Needed 19" width and unfortunately the cage nut section of the rack reduces the width by an inch. Has to use a metal cutting wheel to cut off the cage nut grid on the backside so I could slide the 48v 150ah battery backs onto the back. 15U unit will support 3 150ah batteries. I love the 2 sets of brackets that are included to easily mount the second and third battery units.