Square Indash Vent 3-1/2 X 3-1/2

Square In-dash Vent.  Louver is black with chrome trim.  The vent is designed to mount flush into a panel or dashboard.  The vent can be turned in multiple directions or closed off.

Outer diameter 3-1/2 x 3-1/2

Mounting diameter 2-3/4 x 2-3/4 with four screw holes for mounting purposes 

Mounting depth without duct hose attached 2-3/4