Same as louver boards, below
A set of slats resembling louver boards, arranged in a vertical row and attached at each slat end to a frame inserted in or part of a door or window; the slats may be made of wood, plastic, or metal, and the angle of inclination of the slats may be adjustable simultaneously, to allow more or less light or air into the enclosure.
A door or window with flat sloping pieces of wood, metal or glass across it to let light or air in while keeping rain out
A vented opening into a room that has a series of horizontal slats and arranged to permit ventilation but to exclude rain, snow, light, insects, or other living creatures.
A movable vane for controlling an opening for the flow of cooling air.
A ventilating window covered by sloping slats to exclude rain or light.
one of a set of parallel slats in a door or window to admit air and reject rain
A horizontal arrangement of overlapping and downward slanting timber or glass slats to admit air but exclude rain (often floor to ceiling in tropical climates)
An opening with horizontal slats to permit passage of air and gives reasonable weather protection. Available with timber, glass or metal slats. See Stegbar's recommended suppliers.
Louvres are a form of window set into vertical banks of horizontal blades, which pivot at the ends to open. Louvres provide perfect multi levels of ventilation and are popular now in contemporary architectural designs.
an opening for ventilation purpose which has vanes fitted one on top of the other and sloped at about 45 degrees to keep out the rain