wall grille

wall grille

[′wȯl ‚gril] (building construction) A perforated plate or a framed structure composed of rods or bars that is used to cover a wall opening to restrict vision but allow movement of air.

wall grille

A perforated plate, casting, molding, or framed bars or rods to cover a wall opening, radiator enclosure, etc., restricting vision but permitting the flow of air.