Easy to assemble. Came in a box that was compact so easier to transport to site for assembly. In this case, called support to get product suggestion and they directed me to this item.Installation was not bad able to lift it by myself (no helper) and hold it against wall while securing.Yes the holes for the main upright supports are somewhat not aligned with the base.I was pleasantly surprised by the quality of this rack. Unit ships in pieces and must be assembled. You'll need a phillips screwdriver and a 6mm allen key (not supplied in the kit). The rack is completely made from aluminum extrusions and bolts together. Some of the pieces have locating features that help hold them together during assembly. Unit is not flimsy even when empty. I really like the quality of this rack.I am very happy with this item. Bought to rack a home server. Very solid and does what I needed. Would recommend.The product itself would be great. Solid materials and nice paint work. The only issue I had was that some of the holes weren’t drilled in the right spot. There were holes almost 1/4-inch off which made it impossible to put 2 of the bolts in during assembly. The rack still stays together without those 2 screws at least.Nice rack system, But it is a full build not as what they describe as some build.But very happy with the productThis item seemed simple to assemble, if it came with the correct hardware!! After spending 2 hours and a trip to the store to buy different hardware, I realized the it is completed lop-sided. It is off-square. So if you enjoy wasting half your day assembling something that should be thrown directly in the garbage, this is for you!! Buyer beware!!!I love 19" racks and use them around my house and shop to organize equipment even outside music and IT equipment. It's just great to have a standardized system to stack and storage. I wish there would be something comparable for shelving and drawers.ANYWAY. Product comes in a big heavy box (don't forget to give your Amazon Driver a hug, or at least a positive feedback on the delivery). It's all included. It's not the average IKEA furniture build though. The package come with many tiny pieces as it comes with the nature of it's adjustable purpose. If you are not familiar with these type of racks, bring a good amount of time and patience. Putting it together isn't difficult but needs focus and attention. Following the instructions helps as well as organizing the parts beforehand.There is nothing negative for me to write about this rack. It does what it says with a descent quality. It's not heavy duty like what it's used in server rooms, but good enough for music studios and small business applications. I hope this helps to make a decision.