> For the complete documentation index, see [llms.txt](https://docs.ladybug.tools/hb-energy-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/hb-energy-primer/components/1_constructions/window_gap_material.md).

# Window Gap Material

![](/files/-MihpeJVCoB18fEkuWSY)

![](/files/-MihpeJXbIHrzk3TsBtb) - [\[source code\]](https://github.com/ladybug-tools/honeybee-grasshopper-energy/blob/master/honeybee_grasshopper_energy/src//HB%20Window%20Gap%20Material.py)

Create a window gas gap material that corresponds to a layer in a window construction. This material can be plugged into the "HB Window Construction" component.

## Inputs

* **name**

  Text to set the name for the material and to be incorporated into a unique material identifier. 
* **thickness**

  Number for the thickness of the air gap layer in meters. (Default: 0.0125 m). 
* **gas\_types**

  A list of text describing the types of gas in the gap. Text must be one of the following: 'Air', 'Argon', 'Krypton', 'Xenon'. 
* **gas\_ratios**

  A list of text describing the volumetric fractions of gas types in the mixture.  This list must align with the gas\_types input list. Default: Equal amout of gases for each type. 

## Outputs

* **mat**

  A window gas gap material that describes a layer in a window construction and can be assigned to a Honeybee Window construction.