This desk is the perfect size for me. I chose the smaller size which is just over 39 wide. It was very easy to put together and was completed in an hour. It is sturdy and the monitor shelf is a big plus because it gives you more desktop space to work on. The underneath shelf can be a bookcase but l am using it to put supply and file baskets on it. I have limited space for my home office so this multifunctional desk is perfect. The quality is very good and I highly recommend this desk. Excellent value.