> For the complete documentation index, see [llms.txt](https://docs.ladybug.tools/dragonfly-primer/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ladybug.tools/dragonfly-primer/components/0_create/simple_window_ratio_parameters.md).

# Simple Window Ratio Parameters

![](https://3405893330-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9gBkJelXEQ5LsYEl7%2Fuploads%2Fgit-blob-60615975bb1cafe153e9adddaf9c0be2570e0b10%2FSimple_Window_Ratio_Parameters.png?alt=media)

![](https://3405893330-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9gBkJelXEQ5LsYEl7%2Fuploads%2Fgit-blob-08088ecd1ad4a9a57248b4d1f8db778b88ccb8e0%2FSimple_Window_Ratio_Parameters.png?alt=media) - [\[source code\]](https://github.com/ladybug-tools/dragonfly-grasshopper/blob/master/dragonfly_grasshopper/src//DF%20Simple%20Window%20Ratio%20Parameters.py)

Create Dragonfly window parameters with instructions for a single window using an area ratio with the base surface.

## Inputs

* **ratio \[Required]**

  A number between 0 and 1 for the ratio between the window area and the parent wall surface area. 

## Outputs

* **win\_par**

  Window Parameters that can be applied to a Dragonfly object using the "DF Apply Facade Parameters" component.