Elima-Draft ELMDFT4X1REC Insulated Magnetic A/C Register/Vent Cover for 14-Inch x 8-Inch, 14-Inch x 6-Inch, 12-Inch x 8-Inch, 12-Inch x 6-Inch Outside Dimensions Made from white paintable ABS plastics. Fits registers/vents with outside dimensions of 14" x 8", 14" x 6", 12" x 8" & 12" x 6"- four sizes in one Eliminates heatloss and cold drafts that come through Central Air Conditioning Registers when the system is not in use Saves Homeowners 10% on annual heating/cooling bills Install in seconds on aluminum/steel registers/vent Insulation Value: R-Value 6