16" X 16 Steel Return Air Filter Grille for 1" Filter - Removable Face/Door - HVAC DUCT COVER - Flat Stamped Face - White [Outer Dimensions: 18.5"w X 18.5"h] Easy Front Access to replace Filter Easy Clean Healthy Air Flow Carefully shrink wrapped with cardboard backing to prevent damage in shipment Screws Included No Sharp Surface Edges