---
title: "PdfFrame.UserUnit Property "
canonical: https://www.graphicsmill.com/docs/gm/P_Aurigma_GraphicsMill_Codecs_PdfFrame_UserUnit.htm
product: "Graphics Mill"
---

# PdfFrame.UserUnit Property 
 
Gets the size of one PDF user space unit in 1/72 inch.
 
**Namespace:** [Aurigma.GraphicsMill.Codecs](https://www.graphicsmill.com/docs/gm/N_Aurigma_GraphicsMill_Codecs.htm.md)
 **Assembly:** Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
 
## Syntax
  
```csharp
public double UserUnit { get; }
```
 
### Property Value
A Double value. It is 1 when the page has no `/UserUnit` entry.
 
## Remarks
  
The frame size and the rendered bitmap already take this value into account. The page boxes, such as [MediaBox](https://www.graphicsmill.com/docs/gm/P_Aurigma_GraphicsMill_Codecs_PdfFrame_MediaBox.htm.md), are in raw user space units. Multiply them by this value to get points.
   
## See Also

### Reference

- [PdfFrame Class](https://www.graphicsmill.com/docs/gm/T_Aurigma_GraphicsMill_Codecs_PdfFrame.htm.md)
- [Aurigma.GraphicsMill.Codecs Namespace](https://www.graphicsmill.com/docs/gm/N_Aurigma_GraphicsMill_Codecs.htm.md)