An active grille shutter arrangement having an assembled modular frame comprising: an upper frame portion having a first end and a second end; a lower frame portion having a first end and a second end; a first end cap connectable to both the first end of the upper frame portion and the first end of the lower frame portion by an upper bar end joint formed on the first end of the upper frame portion and a lower bar end joint formed on the first end of the lower frame portion, wherein the upper bar end joint of the first end of the upper frame portion slides into an upper bar end cap joint formed on the first end cap and the lower bar end joint of the second end of the lower frame portion slides into a lower bar end cap joint formed on the first end cap; a second end cap connectable to both the second end of the upper frame portion and the second end of the lower frame portion by an upper bar end joint formed on the second end of the upper frame portion and a lower bar end joint formed on the second end of the lower frame portion, wherein the upper bar end joint of the second end of the upper frame portion slides into an upper end cap joint formed on the second end cap and the lower bar end joint formed on the second end of the lower frame portion slides into a lower bar end cap joint formed on the second end cap; the assembled modular frame of the active griller shutter arrangement formed by the connection of the upper frame portion and lower frame portion each connected to the first end cap and the second end cap, wherein the assembled modular frame defines one or more apertures (32, 32'); a plurality of vanes rotatably positioned between the first end cap and the second end cap for controlling the amount of air flowing through the one or more apertures (32, 32') formed by the assembled modular frame; a center bar extending between the upper frame portion and the lower frame portion, wherein the center bar has an upper end connected to an upper frame center joint formed on the upper frame portion between the first end and the second end of the upper frame portion. an upper frame portion having a first end and a second end; a lower frame portion having a first end and a second end; a first end cap connectable to both the first end of the upper frame portion and the first end of the lower frame portion by an upper bar end joint formed on the first end of the upper frame portion and a lower bar end joint formed on the first end of the lower frame portion, wherein the upper bar end joint of the first end of the upper frame portion slides into an upper bar end cap joint formed on the first end cap and the lower bar end joint of the second end of the lower frame portion slides into a lower bar end cap joint formed on the first end cap; a second end cap connectable to both the second end of the upper frame portion and the second end of the lower frame portion by an upper bar end joint formed on the second end of the upper frame portion and a lower bar end joint formed on the second end of the lower frame portion, wherein the upper bar end joint of the second end of the upper frame portion slides into an upper end cap joint formed on the second end cap and the lower bar end joint formed on the second end of the lower frame portion slides into a lower bar end cap joint formed on the second end cap; the assembled modular frame of the active griller shutter arrangement formed by the connection of the upper frame portion and lower frame portion each connected to the first end cap and the second end cap, wherein the assembled modular frame defines one or more apertures (32, 32'); a plurality of vanes rotatably positioned between the first end cap and the second end cap for controlling the amount of air flowing through the one or more apertures (32, 32') formed by the assembled modular frame; a center bar extending between the upper frame portion and the lower frame portion, wherein the center bar has an upper end connected to an upper frame center joint formed on the upper frame portion between the first end and the second end of the upper frame portion.