HVAC Premium 12x6 3-Way Diffuser - White

12"w X 6"h Is The Size For The Duct Opening Measurement Only Actual Front End Frame Outer Dimensions Are 13.75"w X 7.75"h - SEE BELOW IN DESCRIPTION HOW TO MEASURE A GRILLE High Quality Solid Stamped Steel Construction, No Scuff Powder Coat Durable Finish, No Sharp Edges, 2 Recessed Screw Holes On Each Side with Screws Included, EASY INSTALLATION LOUVERED Supply Grille for Sidewall or Ceiling Application with SmoothGlide Technology, Easy Opening and Closing Back Dampers For Better Airflow Control, Quiet Lever QUALITY PACKAGING - Carefully Shrink Wrapped With Cardboard Backing To Prevent Damage In Shipment - Hand Inspected for Quality Easy Unrestricted Air Flow Deflection For Your HVAC System - 1/2 Inch Spaced Fins.