Elima-Draft Universal Insulated Magnetic Register/Vent Cover for HVAC Aluminum Registers/Vents Fits

Elima-Draft Residential Insulated Magnetic “All-in-One” Cover for aluminum HVAC vents fits three of the most common sizes of residential aluminum HVAC vents. Our unique design covers vents ranging from 13 inch x 13 inch, 11 inch x 11 inch and 9 inch x 9 inch OD. This solid plastic cover is held in place over your vents through the use of magnets. The magnets contact the steel screws that hold your vent in place. With a simple turn of a screw by hand, you can adjust the magnets to the desired size.