I don't understand why others rate this product unfairly. You have to be flexible, able to think outside the box and have good manual skills to install custom-made products. After a cursory review of the instructions, it literally took me 3 minutes to figure out how to approach the installation. However, for those who need help, I advise you to actually READ the simple step-by-step guide for that. I didn't use self tapping metal screws, I cut them and used slightly longer screws that I had onβ¦