What is the difference between louvered and jalousie windows?

Shanghai Superhouse Building Material Co., Ltd

Louvered and jalousie windows both feature horizontal slats, but they differ in design, functionality, and typical usage. Here's a detailed comparison:

Louvered Windows

  1. Design:

    • Fixed Slats: Louvered windows typically have fixed slats that do not move.
    • Material: The slats can be made of wood, glass, metal, or other materials.
    • Installation: Often used for ventilation purposes, such as in closets or utility rooms, and sometimes for decorative purposes.
  2. Functionality:

    • Ventilation: Provide constant ventilation while protecting against direct sunlight and rain.
    • Non-Operable: The slats remain in a fixed position and cannot be adjusted to open or close.
  3. Typical Usage:

    • Common in areas where continuous ventilation is desired without the need to adjust the window.
    • Often found in tropical or subtropical climates.

Jalousie Windows

  1. Design:

    • Adjustable Slats: Jalousie windows have slats that can be adjusted to open and close.
    • Material: The slats are usually made of glass, but can also be made of wood, acrylic, or other materials.
    • Mechanism: Operated by a crank or lever mechanism that allows the slats to pivot.
  2. Functionality:

    • Adjustable Ventilation: Allows for adjustable ventilation; slats can be fully opened for maximum airflow or closed to block airflow and weather.
    • Weather Control: Can be adjusted to control the amount of air and light entering the space, providing better protection against rain and wind when closed.
  3. Typical Usage:

    • Common in homes, particularly in warmer climates where flexible ventilation is important.
    • Frequently used in sunrooms, porches, and other areas where adjustable air flow and light are desired.


  • Louvered Windows: Fixed slats, usually for ventilation and decorative purposes, not adjustable.
  • Jalousie Windows: Adjustable slats, allowing for control over ventilation and light, typically used in residential spaces for better weather management.

Understanding these differences can help in selecting the appropriate window type based on the desired functionality and aesthetic requirements of a space.

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