Commercial grade solid aluminum with modern architectural design for ceilings, walls, and floors. This model can be used as a supply vent cover and return vent cover - This is a non-filter model Our vents are perfect for bathrooms, kitchens, and living rooms and can be used to update your office setting or commercial space. Update any room with our modern ac vent covers Cfm: 233 ft3/min - effective velocity: 9.8 ft/s; neck: 11 7/8" x 5 3/4" - face: 13 3/4" x 7 5/8" (The neck is the section that goes into the vent hole while the face is what will actually cover) Use our modern ac vents covers for your office essentials, home improvement, or remodels. Adds value to any wall, ceiling & floor space by updating not only the look but also the feel *This is a design and utility patent pending product* We make all sizes from 6x4 to 30x24 standard sized modern ac vent covers for the modern day home