Knowledge Base > Using ICC Profiles/Color Management > Using a profile for a heavier paper, your recommended media setting is greyed out in my printer dialog box.
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Certain media types are going to be grayed out until you change the paper path. To do this you have to go back to the Page Setup screen where you indicate your paper size. When you select your paper size, you will notice a small arrow that indicates there is a sub-menu. In the sub-menu you will need to select the rear 'manual' paper path. The heavier paper options now will show up.

