outside lining

outside casing, outside architrave, outside facing, outside lining, outside trim

outside casing
In a cased window frame, the members of the jamb or head which face outside of the building and appear as trim.
References in periodicals archive ?
The crowd clearly adored Coulter, and after her speech, many conference attendees were trapped in the main hall for 20 minutes because of the press of people outside lining up to buy autographed copies of Coulter's latest screed, Godless: The Church of Liberalism.
Position the outside lining panel right side up on a flat work surface.