I installed this in a narrow cabinet in my new RV. Without this, the cabinet was pretty much useless.  This provides us with a lot more storage in the galley area, where every inch matters. 
Installation wasn’t too difficult except that it was such a tight narrow space I had trouble getting my arms to the back so I could place the screws.  Certainly that’s no fault of the product, but something to think about for where you’re going to install it. 
I like the utility of the shelf and it slides smoothly and easily.  It’s very well-made.  I’m really happy with the purchase.