Glossary of window and door terms. active panel. primary operating door panel. aluminum surround. the aluminum frame around a screen or energy panel. apron. a horizontal trim member that laps the window sill above the apron and extends beyond the interior casing. see apron entry.. In window trim, a moulding that holds the bottom sash of a double-hung window in place and can also be used as an apron under window stools. in door trim, a stop is nailed to the faces of the doorframe to prevent the door from swinging through the frame.. Trim is a general term, often used to describe all types of molding and millwork. casing is a type of molding, typically used to trim the perimeter of windows and doors. casing is typically less wide (tall?), but thicker than base molding. 11/16" x 2 1/4" base molding (or baseboard) is a type of molding, which is applied where the wall and.
Casing (trim): exposed molding or framing around a window or door, on either the inside or outside, to cover the space between the window frame or jamb and the wall. caulk: to seal cracks and joints around window and door frames to prevent leakage of water and air.. Interior window molding does double duty, covering gaps while defining a style. window trim × window trim. image 1 of 8. illustration by harry campbell. read full caption trim terminology. interior window molding does double duty, covering gaps while defining a style. use this guide to understand what each part does and how all the pieces. Bob ryley tackles window trim in the master bedroom of the new colonial..
