> For the complete documentation index, see [llms.txt](https://docs.imerit-prod.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.imerit-prod.io/annotation-tool/key-features/preset-cuboid-dimensions.md).

# 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="/files/qchq9tcQpS8cX7YBw03I" alt="" data-size="line"> Helps reduce annotation time and improve consistency.
{% endhint %}

<figure><img src="/files/z5HvOYfMPyxmR7wu110v" alt=""><figcaption></figcaption></figure>

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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](/project-setup/create-recipe/2.-classes.md#preset-cuboid-dimension).

1. Navigate to either **3D** or **BEV (Bird’s Eye View)** mode, depending on your preference.
2. From the Class List, choose the class for which you want to create a cuboid annotation.
3. 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.
4. Experts can still **manually resize** the cuboid if needed, but starting with a predefined size significantly **reduces repetitive effort** and improves consistency.

{% hint style="info" %}
Preset Cuboid Dimension toggled off in the recipe will have a standard dimension of a cube.
{% endhint %}