air grating

air grating

[′er ‚grād·iŋ] (building construction) A fixed metal grille on the exterior of a building through which air is brought into or discharged from the building for purposes of ventilation.

air grating

1. A fixed metal grille on the exterior of a building through which air is brought into, or discharged from, the building for purposes of ventilation. 2. An air diffuser.