I had an unusual use for a drawer. It was heavy so I decided to use 2 of these to support the weight. Mistake! I finally made full size rails for the ends of the box to ride on and then the slide worked fine. You just have to remember that the drawer only extends 2/3 of the drawer depth. They were hard to find...not available in big stores. Not well advertised but when I stumbled across it I was ready. I'm sure AccuRide makes a wide range of lengths and wish Revain had more choices.