The door people use every time they enter
or leave the house.
The center member
of a double door, which is attached to the
fixed or inactive door panel.
Call Out Size (C.O.S.)
nominal size of a window or door. In other
words the “name” of
the size. For instance, a window that is 3 feet
wide and 4 feet high would have a call out size
Molding or framing
applied to the framework of doors and windows.
A material, such
as aluminum or vinyl, covering the exterior
of a door or window, increasing durability
with less maintenance.
An entryway made up of
a door in a frame, one or two sidelights, and
A group of wood parts machined and
assembled to form an enclosure and support
for a door; door frames are classified
either as exterior or interior door frames.
The part of a door frame that surrounds
and contacts the edges of the stiles and the
top rail of a door.
A metal or plastic strip attached to
the outside of the head or side jambs to provide
a weather barrier, preventing leakage between
the frame and the wall.
The area in which
the window sash or door panels are mounted.
Frame components include the head jamb, sill,
side jambs and blind stop.
The part of the sash or door panel which
holds the glass in place.
horizontal member forming the top of the door
Two plates joined together by a pin and
attached to a door and its frame whereby a
door is supported and is enabled to swing
The door of a pair of doors
that does not contain a lock, but is bolted
when closed, and to which the strike is fastened
to receive the latch or bolt of the active
Insulating glass (IG)
A combination of two
or more panes of glass with a hermetically
sealed air space between the panes of glass.
This space may or may not be filled with an
inert gas, such as argon.
When the door opens into the house
The wood that surrounds the door unit.
The frame to which the door unit (door, doors,
and/or doors and sidelights) is attached.
A protective plate applied on the
lower rail of the door to prevent the door
from being marred.
A mechanism that holds a door shut;
does not lock.
Light (also spelled lite)
Glazing framed by
muntins and/or sash in a window or door.
A mechanism that holds a door shut and
offers a locking option.
Low E Glass
A special glass type with a microscopically
thin, metallic silver oxide bonded to one side
of the glass that reduces heat transference,
lowering home heating and cooling costs.
When the door swings to the outside
of the house when opened.
Usually refers to the separate panel
or panels in a door frame
Term used for the horizontal pieces that
constitute the top and bottom edges of a door.
Fixed panel of wood and glass next
Term for the vertical pieces that constitute
the side edges of a door.
That part of a door frame that
separates the top of a door or a window from
the bottom of the transom.