A small grid. The right dimensions.
The Gridfinity system starts with a 42 mm square. Bin footprints leave a small gap; baseplates keep the full grid pitch.
Common bin footprints
| Grid size | Outer width | Outer depth | Matching plate area |
|---|---|---|---|
| 1 × 1 | 41.5 mm | 41.5 mm | 42 × 42 mm |
| 1 × 2 | 41.5 mm | 83.5 mm | 42 × 84 mm |
| 2 × 2 | 83.5 mm | 83.5 mm | 84 × 84 mm |
| 2 × 3 | 83.5 mm | 125.5 mm | 84 × 126 mm |
| 3 × 3 | 125.5 mm | 125.5 mm | 126 × 126 mm |
| 4 × 2 | 167.5 mm | 83.5 mm | 168 × 84 mm |
Height units and the stacking lip
One height unit (U) is 7 mm. In this profile, 3U gives 21 mm before the stacking lip. Rebuilt rounds the lip’s top edge, so its measured addition is about 3.55 mm, rather than the sharp profile’s nominal 4.4 mm. A generated 3U lipped bin is approximately 24.55 mm tall. Use the exact total shown in the generator for your file.
The thin baseplate is 5 mm tall, but the bin nests into it. Adding 5 mm to the bin height gives a conservative upper bound, not an exact assembled height. Where clearance is tight, verify the physical assembly before printing the whole drawer.
Fitting a drawer
For a 287 × 410 mm drawer with a 1 mm margin on each side, usable space is 285 × 408 mm. It holds a 6 × 9 grid (252 × 378 mm). Centering leaves 17.5 mm on the left and right, and 16 mm at the front and back, measured from the drawer walls.
Millimeters and inches
One inch is exactly 25.4 mm. Generated STL files use millimeter coordinates; STL itself does not declare units. Import into your slicer as millimeters at 100% scale. The display unit toggle never scales the model.
Model sources
Dimensions here describe the pinned Rebuilt profile, not every Gridfinity variation.
Gridfinity Rebuilt — pinned model source ↗Community Gridfinity specification ↗