14" x 10" ADJUSTABLE DIFFUSER - Vent Duct Cover - Grille Register - Sidewall or Cieling - High Airflow [Outer Dimensions Are 15.875" Width X 12" Height] Sidewall and/or Ceiling Grille Easy Unrestricted Air Flow For Youre HVAC System Carefully shrink wrapped with cardboard backing to prevent damage in shipment Screws Included No Sharp Surface Edges