Definitions for "Framed Opening"
A frame opening is designed to cover the wood substrate for an undermount sink. The opening is precisely matched to follow the shape of your sink.
Jamb, headers and flashing which surround an opening in the wall of a building.
Framing members (headers and jambs) and flashing which surround an opening in a wall or roof of a building for field installed accessories such as overhead doors, windows, louvers, or roof mounted heating/cooling units.