> For the complete documentation index, see [llms.txt](https://staylime.com/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://staylime.com/docs/energy-label/advanced-setup/manual-efficiency-class-for-legacy-products.md).

# Manual Efficiency Class for Legacy Products

For older or discontinued products not listed in the EPREL database, you can manually display the energy label and product sheet by filling out **three metafields** at the product level in your Shopify admin:

* **Energy Class** (`A+++` to `G`)
* **Energy Label** (`image file`)
* **Product Information Sheet** (`PDF`)

There’s no setting to enable — just enter the values, and the app will display them automatically.

<figure><img src="/files/ouHBRG6amRofTvB4DTPE" alt=""><figcaption></figcaption></figure>

{% hint style="warning" icon="triangle-exclamation" %}
**Important notes:**

1. The **EPREL Registration Number** metafield must be left empty — both at the product and variant level.
2. This feature works **only at the product level** (variants are not supported).
3. To stay compliant with EU law, use this method **only for legacy products** that do not have an EPREL registration.
   {% endhint %}


---

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