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: 302 ft3/min - effective velocity: 9.8 ft/s; neck: 35 3/8" x 3 1/8" - face: 36 3/4" x 4 1/2" (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 sizes from 12" to 72" linear slot diffuser ac vent covers for the modern day home We have over 70 standard vent cover sizes to replace your traditional looking grills. We also have over 40 linear slot diffuser sizes with their matching plenum box. All models are in stock ready to ship in both white and black colors ? Our models are also paintable. All vent cover sizes can be used as both supply and return grilles. Currently our decorative air vent covers are non-filtered models. This will work perfectly if you have your filter in the machine.