Calculate inside drawer-box dimensions from the opening and the slide hardware reduction.
Box Width
— in wide
Inside drawer box.Usage Tip
Check the exact clearance in your slide instructions; brands vary, and full extension depends on matching the box depth to the slide length.
THE MATH
box width = opening width − slide allowance
box height = opening height − 1/2 in
box depth = cabinet depth − 1/2 in
box height = opening height − 1/2 in
box depth = cabinet depth − 1/2 in
A drawer box is built smaller than its opening to leave room for the slide hardware and clearance. Side-mount slides take the most width, under-mount less, center-mount none.
Enter the opening width and height, the cabinet depth, and the slide type.
Width is reduced by the slide allowance; height and depth lose a half inch for clearance.
Width is reduced by the slide allowance; height and depth lose a half inch for clearance.