12" x 12" Aluminum Return Grille - Easy Air FLow - Linear Bar Grilles [Outer Dimensions: 13.75"w X 13.75"h] Beautifull and Sturdy Aluminum Sidewall and/or Ceiling Grille Easy Unrestricted Air Flow For Your HVAC System Carefully shrink wrapped with cardboard backing to prevent damage in shipment No Sharp Surface Edges - Screws Included