# Window Gap Material

![](https://459479801-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9N5K8lMbAhbyBVgms%2Fuploads%2Fgit-blob-c190eca4a2bb0a48350af81cb36b3bf5e78d5a5f%2FWindow_Gap_Material.png?alt=media)

![](https://459479801-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9N5K8lMbAhbyBVgms%2Fuploads%2Fgit-blob-defae44e9a2c9899e15f6bedadb1271cc2bfdd95%2FWindow_Gap_Material.png?alt=media) - [\[source code\]](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.