Having slats or strips arranged in a way that allows air or light to pass through while providing some degree of privacy or protection from the elements.

The louvred windows allowed a gentle breeze to flow through the room while keeping the sun's glare at bay.

louvredpast participle

Fitted with a louvre or louvres; having slatted constructions that permit the passage of air or light while affording protection or privacy.

The museum's louvred façade filters daylight into the galleries.