IKEA Alex Gridfinity Set

Perfect fit Gridfinity base for IKEA Alex drawers. 2x 5x6 middle sections, 4x 1x6 sides, and a rear stopper to fill the remaining gap. Each of the 1x6 sides has a slightly thicker side meant to take up the slack width-wise, make sure the thicker side is facing out when putting everything in the drawer. It seems there are conflicting dimensions online, maybe IKEA changed their drawer dimensions at some point, these bases are designed specifically for 11-11/16" (~297mm) wide by 20-9/16" (~522mm) deep drawers.