Air Grilles With Thickness Extruded Aluminium are coverings on the return air vents of your HVAC system. Return vents do as their name suggests, they return air to your central heating or cooling system to condition it. A grille is a vent cover through which air is blown into or out of a room for circulation back to the central heating or cooling unit. These are commonly found if you have heating or central air conditioning. A grille has no damper to control air flow, so air is left to flow freely.

• Easy to use