A(n) ____ Window Unit Consists of a Frame in Which

Q14: French doors may contain from 1 to

Q15: Before windows are installed, the exterior walls

Q16: _ are narrow, closely spaced, concave grooves

Q17: Double-hung windows are twice as large as

Q18: Louver doors are made with spaced horizontal

Q20: The bottom horizontal member of the window

Q21: Bifold doors are made in wider widths

Q22: The sash is a frame in a

Q23: _ windows have a curved top or

Q24: Skylights provide both light and ventilation.