I installled this in two of my kitchen cupboards. One each on the bottom shelf and one on the movable shelf. Four slides in all. On the movable shelf I installed two small angle brackets to stop the shelf from tipping when the fully loaded drawer was completely extended. Now that drawer is very stable even when all the heavy items are at the front. The nice thing about mounting the shelf to the movable shelf is that the mounting was simple, not done in the confines of the cupboard. Completing the installation on the bottom shelf was very easy. A bit expensive, but I would still recommend this product.