ABSTRACT
Architectural doors have numerous general and specialized uses. Doors are generally used to separate interior spaces for privacy, convenience, security, and safety reasons. Doors are also used to secure passages into a building from the exterior for reason of safety and climate control. Louvered door has fixed or movable wooden fins which permit open ventilation while preserving privacy and preventing the passage of light to the interior. A window isn't just meant to bring light and views into a room. It may also define a room's shape, provide an architectural focal point, allow ventilation, and/or provide for emergency escape. The best casement, awning, and hopper hinges pivot to allow arm space between the sash and the window frame so washing exterior glass is an easy job. Casement windows are hung singly or in pairs, are side-mounted on hinges and operated by cranks that swing the sash inward or, more commonly, outward.
