How to retrieve 6x4 labels

[gmcbroom]

Thanks for providing a class that undoubtedly has been of great use to many.

I need to retrieve the label in the 6x4 format which is suported using the DHL 4.0 spec. Is it just a case of changing the 'LabelTemplate' enumerator values in the Label.php classes to include 6X4_PDF (seems to work). If so would it be possible to include this in your classes?

Thanks