Drawer Box & Blum Slide Calculator

Eliminate slide binding and incorrect bottom routing. Calculates exact drawer box outer width, inner width, and bottom dado dimensions for Blum undermount and side-mount slides.

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1. Internal Cabinet Opening

Internal Opening Width (mm)726 mm

Distance between internal gable walls

Internal Opening Height (mm)720 mm

2. Slide System & Material Specs

Drawer Slide Type

Drawer Box Side Panel Thickness

Blum rule: 16mm sides require Opening - 10mm; 19mm sides require Opening - 4mm.

Nominal Slide Length

Stacked Drawers

Reveal Gap

Master Drawer Box Width & Deductions

Guaranteed zero-binding fit for Blum Undermount slides

Box Outer Width

716 mm

Opening - 10mm

Internal Width

684 mm

Opening - 42mm exact

Sub Front/Back Length

684 mm

Fits inside side gables

Bottom Panel Cut

695 × 490

6mm groove captured

Stacked Drawer Fronts & Box Heights (3 Drawers)

Factoring 3mm reveal gaps between drawer fronts and 35mm undermount slide clearance

Tier	Front Height	Box Height	Box Outer (W × L)	Sub-Front/Back	Bottom Panel
#1	160 mm	125 mm	716 × 500	684 mm	695 × 490
#2	274 mm	235 mm	716 × 500	684 mm	695 × 490
#3	274 mm	235 mm	716 × 500	684 mm	695 × 490

Export 3D Drawer Stack into CNC CAM Studio

Open these 3 drawers in 3D WebGL Studio to generate Blum clip pilot holes & rear hook boring coordinates.

Open in 3D Studio