> 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

![](/files/-Mihrb6ylmGjJCAF7JWp)

![](/files/-Mihrb6zE9Fo-zFlFk93) - [\[source code\]](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.