Model MV ceiling diffuser with 2 way grille Our Model MV ceiling diffuser line is a snap to install in any ceiling. Quick tear off bands allow for easy size changes and our swinging clips will fasten the assembly into the ceiling in seconds! Made from high impact polymers and featuring a virtually airtight damper for winter shut off and/or volume control makes them a great fit in any application. View Video by clicking the link: https://youtu.be/al8H7p1-YE0