The Whitmore 4 tier closet shelving unit was very easy and quick to assemble. I did use a rubbet mallet to lightly tap each connector and shelf into the correct space.  This helped assure a tight connection and made it even easier to assemble.   All parts are smooth and finished nicely.  I appreciate that it is light, about ten pounds,  and was easy for me to assemble and move which is a great bonus. It means a lot to me that it's a project I can easily do by myself. Each shelf is rated to hold 25 pounds and the shelves and connectors are made very sturdy and it has worked out very well for me.  I also bought seven of the Debbie grommet storage bins, made by Closet Candie, that I am using with this system.  I like that I have the additional storage space and if I need to move it, I can easily do so. I think this would be great to use in a mud room or similar situation where you need extra storage and organizational capabilites.