Perfect addition to my living room for the 3rd part of my book and knick-knacks collection(S). Due to the uniquemodern design, instead of weight being distributed evenly, the collective weight of the shelves made the entire unit sag down the middle. Starting at the top shelf and sagging until the second to last shelf surface. 
In order to counter this issue, we made two essential remedies, with one remedy involving an addition to the unit’s design. 

First, we anchored the shelf unit to the wall as recommended. Secondly, we arranged 15 small, round adhesive furniture pads in rows across the bottommost shelf that acts as the base on the floor. You cant see these circular pads once the shelf is upright. When spaced evenly, there are 5 rows of 3 small, round, adhesive furniture pads spanned across the base. This method was a lifesaver because it eliminated the sagging and increased the stability. Wayfair. it probab