As title really; How do you go about fitting a dog flap into a PVC double glazed (slightly frosted glass) door. The glass is in one whole panel from top to bottom and I need to fit a dog flap into it somehow. I really don't want to buy a new door and cutting a whole in the glass pane sounds difficult and dangerous. Can you get a section of the glass cut out and somekind of panel put in? So basically, whats the best way of doing this? Advise needed please.