Question 1
Vertical member on each side of the door
Stile
Door Jamb
Barn-Door Stay



Question 2
A small wheel which rolls along a horizontal track
Stile
Barn-Door Stay
Door Jamb



Question 3
An opening with a series of slats, blades or piercing which permits the passage of the air
Full-Flush Door
Door Louvers
Folding Door



Question 4
A handle, more or less spherical, usually for operating a lock
Knob Lock
Knob
Knob rose



Question 5
A door of hollow-metal construction
Full-Glass Door
Folding Door
Full-Flush Door



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