# Why there are white grids when outputting specific resolution images, but the preview is normal?

If you have **semi-transparent curtains/custom blinds** in your scene, some of the scenes may have white grids in the ↓ image when outputting at certain resolutions (the preview is normal). 

This is a known issue with the current version and can be fixed by adjusting the material of the curtain/blinds model to 100% opacity (adjusting the material to a transparent material template & opacity parameter to 100%), then you can get the normal output effect. We will fix it in subsequent releases.

<figure><img src="https://3611830798-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-MjbN1iGmN_HBnj_fyU9%2Fuploads%2FeAciUPLeOiq2SfVflVt0%2Fimage.png?alt=media&#x26;token=bddf0b2e-5cee-4cea-a2e7-a1cda6cea563" alt=""><figcaption><p>there are white grids when outputting specific resolution images (the preview is normal)</p></figcaption></figure>