# Preset Cuboid Dimensions

The Preset Cuboid Dimension allows teams to define a standard cuboid size per class - particularly useful for objects with known and consistent dimensions.

{% hint style="success" %} <img src="https://3895963154-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FTcOUG6rfWxqGM0N4db2P%2Fuploads%2FGOAkLkFFY9H0DEt10649%2Fbold_idea_icon.png?alt=media&#x26;token=5e795075-b5f4-4e03-a9dd-c01069ceac8b" alt="" data-size="line"> Helps reduce annotation time and improve consistency.
{% endhint %}

![](https://content.gitbook.com/content/TcOUG6rfWxqGM0N4db2P/blobs/rmgArd9ZFy0SsLlyzjXH/image)

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## Benefits

* Speeds up annotation workflows.
* Reduces human error and inconsistency across frames.
* Especially useful for frequently repeated or similarly sized objects (e.g., traffic cones, signs).

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## Steps to Use Preset Cuboid Dimensions

Preset cuboid dimensions must be pre-configured in the Recipe for each class, with the help of enabling the [Preset Cuboid Dimension](https://docs.imerit.net/3d-multi-sensor-fusion/labeling/drawing-tools/cuboid#preset-cuboid-dimension).

{% stepper %}
{% step %}

### Navigate to 3D or BEV

Navigate to either 3D or BEV (Bird’s Eye View) mode, depending on your preference.
{% endstep %}

{% step %}

### Choose a class

From the Class List, choose the class for which you want to create a cuboid annotation.
{% endstep %}

{% step %}

### Start annotating

When you begin annotating, the tool will automatically generate a cuboid using the preset dimensions associated with the selected class - no need to start from scratch.
{% endstep %}

{% step %}

### Adjust if needed

Experts can still manually resize the cuboid if needed, but starting with a predefined size significantly reduces repetitive effort and improves consistency.
{% endstep %}
{% endstepper %}

{% hint style="info" %}
If Preset Cuboid Dimension is toggled off in the recipe, the tool will use a standard cube dimension.
{% endhint %}