Corner Clearance Zones
Why won't my corner drawers open fully?
Door & Drawer Articulation
To prevent hardware "collision," a minimum of 3" of filler or "dead space" is required in corners. This ensures drawer handles on one run do not strike the drawer faces on the perpendicular run.
The 2" to 3" "filler" space required in corners to prevent hardware from colliding with adjacent drawer fronts.