I assembled this shelving unit in 2 3-Tier units. The Unit with the Casters is fine. However, there are a couple of issues with the one with the leveling feet. The threading on one of the TOP POLES (B) is longer than then threading on the other 3 TOP Poles (B). This makes one pole a little longer than the other 3. The 4 caps (I) included do not fit in the top of the Bottom Poles (B).The threaded inserts (J) were screwed into the base of the Top Pole (B). I contacted Seville and I was informed I need to assemble it following the instructions and they sent me a Video on how to assemble it. Unfortunately, the video showed how to install it as one piece using the Wheels. I wrote them back and indicated that I bought this item to be used as 2 separate units as indicated in the description. They ended up sending me 4 new poles with caps on them but they are not the same. They asked me if the product I have was made in Taiwan or Vietnam so they can send the correct parts. I told them Vietnam and sent pictures. When I received the replacement poles, they are made in Taiwan so they are not the same as the one I have. I cannot return the item since I no longer have the original box so now I am stuck with this and have the second unit with the leveling feet assembled with one pole longer than than others and no caps on top of the poles. All you can see is the threading.

I needed shelves to organize my storage room, so I purchased two sets and they worked perfectly. I didn't use the casters because I was putting them on carpet. I had no problem putting the shelves together other than measuring to be sure all the shelves were even on both sets. Since I didn't have a rubber mallet, I improvised by using a regular hammer and an oven mitt. Worked just fine!

The shelving unit appears to be very high quality. I loo forward to using it. However, shipping (via Fedex--say it all) resulted in the bottom shelf being bent. Customer service was responsive! (big positive shout out to Jeremy), but the vendor shipped out the wrong color replacement shelf--chrome instead of graphite. So I ordered this on 9/5. It is now 9/26 and I still do not have a unit that I can use. The month+ turn around to resolve the issue is frankly unacceptable.

These shelves are actually 47 inches wide, 45 inches between the poles if you plan to use storage containers and slightly less than 18 inches deep, with only 15.5 inches between the poles. I have to either return the shelves or get smaller storage totes

I bought one of these several years ago. Then I decided one was not nearly enough. I think I have purchased at least seven of these over the years and truth be told I would love to order at least two more. The quality is excellent. I would not want to try it but I bet you could exceed the 600 pound limit on these. I like the fact that I can roll them around easily. I have some of these in my garage and if I need to make space for a project I just roll these out of the way. the wheels are lockable which is another thing I like about these. Sam's has an excellent price on these. I've seen shelves similar to these elsewhere but lower in quality and much higher in price. Honestly I do not see how sam's can sell these at the price they do.

I love that they come with wheels and how solid they are. They are a good value for the money. At other stores, they have something similar for the price, but do not contain the nice caster wheels. I like to use them as plant stands to start seedlings in the spring with four shelves set up for enough space for the lights and seedlings for each shelf. I hang 4' shop lights for light and have all the plugs plug into one power strip I mount up high on the rack with zip ties so water doesn't get into it. Since the racks are 4' long, the 4' shop lights it perfectly.

Make sure you check each shelf carefully before attempting to put this together. Three of the 6 shelves had defects- instead of 4 ROUND openings to slide the shelf onto the poles, at least one opening was OVAL vs. ROUND shaped, which made it very difficult to get the shelf to sit level on the poles. I struggled with two of the lesser deformed of the 3 shelves and with the help of a rubber mallet, got them to stay put and level. However, the last shelf had such a deformed oval-shaped opening that it wouldn't sit properly on the poles at all. I contacted Sam's and they worked with me to give me a partial refund so I wouldn't have to return the 100 lb thing!

Quality control appears to be an issue. One of three boxes I ordered came damaged and incomplete. That box consisted of eight sections to complete the four poles. However, there were five lower sections and three upper sections included for the poles. I was able to assemble four poles, but one pole does not look like the other three poles. When the four poles were completely assembled, the fourth pole did not have a cap and I was unable to put a cap on the fourth pole. Also in that same box, the brakes on one of the wheels does not lock, just spins, regardless of how you press it. The other two boxes were complete and we were able to assemble per instructions. I am happy with two of the three shelving units I purchased. Overall, the product works and looks good. I did not return the defective unit because it was too much trouble to disassemble and repackage. I would recommend this to a friend with a caveat; check all boxes for included parts before assembling and discovering a need to return.

I have purchased 8 of these exact shelves and am very satisfied. Out of the eight one did have a bent shelf that was quickly replaced by manufacturer. I have read the negative comments and mostly it seems people don't know how to assemble or assume the plastic seperators used to protect shelves in shipping are actual parts. When you put the poles together sometimes they are not a perfect straight line when combined but once you put the shelves all on the unit is straight every time. The fact that these have plastic shelf liners makes them a fantastic value. If you were to purchase seperately you would spend $40 or more for the shelf liners.I am extremely pleased with these and will probably buy another 6 to 8 units over time.

I just redid my whole laundry room with these shelves and I can't praise them enough. A fantastic value that will last for years. I purchased two of these units for my shed about ten years ago, I used 2 shelves from each to 'span' in between the units to make one big unit that was 12 feet wide by 4 shelves high. Even when loaded with the big storage bins I have no problem rolling the unit around to get behind it and they still look like the day I bought them. I wouldn't recommend any other shelving at any price.