Door Swing Terms:
Casing:
Molding or trim around window or door to cover the space between the window frame and wall.
Cladding:
Metal or vinyl material on outside faces of wood windows or doors for weather protection & low-maintenance surface.
Drip Cap:
Outside horizontal molding to divert water from the top casing.
Extension Jamb:
Increase depth of the window or door jambs to fit wall thickness.
Frame:
The surround of a window or door panel.
Grille:
Divided window pane appearance (simulated divided)
Head Jamb:
Horizontal top of the window or door frame.
Header:
Supporting beam above window or door opening (rough opening).
Jamb:
Vertical side of the window or door frame.
Jamb Depth:
Width of the window frame from inside to outside.
LVL:
Laminated Veneer Lumber, veneered lumber glued together to give added structural capabilities.
Mullion:
A vertical member to structurally join two window or door units.
Rough Opening:
A framed opening in which the unit will be installed.
Sash:
Framework of stiles and rails in which the window glass is set.
Sill:
Horizontal piece at the bottom of the window frame.
Simulated divided lights:
Grille fixed to the inside and outside of glass to simulate the look of a true divided glass.
Stile:
Vertical member of a window sash or door panel.
Transom:
Small window located above a door or another window.
Weather-Stripping:
Resilient perimeter material of the sash and/or frame to minimize air infiltration.