# selectors Properties

The `selectors` key contains layout properties that specify the layout name, designer grid settings, background settings, and requirements for devices that can use this layout.

| Property Name                 | Type    | Details                                                                                                                                                                                                                               |
| ----------------------------- | ------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `minWidth(<width>)`           | Integer | Minimum width (in pixels) of the devices supported by this layout. Included in the Dashboard Designer's user interface.                                                                                                               |
| `maxWidth(<width>)`           | Integer | Maximum width (in pixels) of the devices supported by this layout. Included in the Dashboard Designer's user interface.                                                                                                               |
| `orientation( <orientation>)` | String  | Orientation of the devices supported by this layout. Valid values are: ```portrait`or`landscape`. If this property is not specified, then the layout supports both orientations. Included in the Dashboard Designer's user interface. |
| `platform(<platform>)`        | String  | Platform of the devices supported by this layout. Valid values are: `iOS` or `Android`. If this property is not specified, the layout supports both platforms. Included in the Dashboard Designer's user interface.                   |