# Glass Material

![](https://459479801-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9N5K8lMbAhbyBVgms%2Fuploads%2Fgit-blob-c9004aa74e479509cae0ab41b1369f429e9ab8c5%2FGlass_Material.png?alt=media)

![](https://459479801-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Ma9N5K8lMbAhbyBVgms%2Fuploads%2Fgit-blob-8e480162a0f5ce9751cfc36f175f7c46e74916b1%2FGlass_Material.png?alt=media) - [\[source code\]](https://github.com/ladybug-tools/honeybee-grasshopper-energy/blob/master/honeybee_grasshopper_energy/src/HB%20Glass%20Material.py)

Create a window material to describe a single glass pane corresponding 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 \[Required]**

  Number for the thickness of the glass layer \[m]. Typical values range from 0.003 meters (3 mm) to 0.012 meters (12 mm). 
* **transmittance**

  Number between 0 and 1 for the transmittance of both solar radiation and visible light through the glass at normal incidence. (Default: 0.85 for clear uncoated glass). 
* **reflectance**

  Number between 0 and 1 for the reflectance of both solar radiation and visible light off of the front side of the glass at normal incidence. (Default: 0.075 for clear uncoated glass). 
* **t\_infrared**

  Long-wave transmittance of the glass at normal incidence. (Default: 0). 
* **emiss\_front**

  Number between 0 and 1 for the infrared hemispherical emissivity of the front side of the glass. (Defaul: 0.84, which is typical of clear glass). 
* **emiss\_back**

  Number between 0 and 1 for the infrared hemispherical emissivity of the back side of the glass. (Default: 0.84, which is typical of clear glass). 
* **conductivity**

  Number for the thermal conductivity of the glass in W/m-K. (Default: 0.9, whih is typical of clear glass). 

## Outputs

* **mat**

  A window material that describes a single glass pane and can be assigned to a Honeybee Window construction.