Bifold pivot install height
You would have to custom-craft the installation, for example adding the wood block you describe.
Often the pivot consists of a long (vertical) rod that can be adjusted, usually by screwing in or out of the wood door, to achieve the desired height of the door edge above the carpet or threshold.
I suggest installing the door hardware first, then the carpet. Some folks install the carpet first and then the hardware on top of the carpet ends up being slanted and tending to wear out sooner or let the door pop off of its pivot.
The disadvantages of crab apple trees. In summer, the apples are too sour to pick and eat. In winter the birds come and leave dropping all over the place.
Last edited by AllanJ; 10-12-2009 at 08:17 PM.