Mount the slides
Follow the instructions included with your drawer slides to separate the slides into two parts: a channel and a rail. Usually, pressing down on a plastic lever releases the parts and allows you to separate them. Screw the rails to the drawer and the channels to the carrier sides
When you’re done installing the slides, check the fit by carefully aligning the rails with the channels and sliding them together. The rollout should glide easily on the ball-bearing slides. If the slides seem too tight, you can adjust the fit by removing one of the carrier sides and slipping a thin cardboard shim between the carrier side and carrier bottom before reassembling them.
(Photo 7) (Photo 8).