Louver Flange Kit, Material Aluminum, Rough Opening Height 60 in, Rough Opening Width 60 in, Overall Height 1 1/2 in, Compatible with Grainger Part Number 45C671, 45C674, Includes Mounting Hardware, Overall Width 62 1/2 in, Overall Length 62 1/2 in. This item has been restricted from sale in the following state (s): []