Problem. I am using a Duct Size Tag (Free Size) as in Australian we show the clear internal dimensions. The duct has 75mm internal lining, so I have shown it as 850x450. In plan the duct size displays correctly (with the first figure bing the side shown) i.e 700x300. In section however, the duct size still displays as 700x300, not 300x700. Anyone else come across this problem?