Generated PDF page size - US Letter?

[elevationprint]

SO I have googled my eye balls out. The default size for generated PDFs is set for A4 size paper. I am US based and need to change the invoice, shipping slips, etc.. to US letter size (8.5x11)

Who has the magic key to help me?

[rocky]

Try changing line 82 (in PrestaShop v1.6.1.8) of classes/pdf/PDFGenerator.php from:

        parent::__construct($orientation, 'mm', 'A4', true, 'UTF-8', $use_cache, false);

to:

        parent::__construct($orientation, 'mm', 'usletter', true, 'UTF-8', $use_cache, false);