Not sure if you need that extra sweater or cap? Never second-guess outdoor temperature again Simply peel the static cling from the package and adhere to any clean outdoor window. That's all you need to set up this EASY-TO READ thermometer It adheres electrostatically, so you're free to remove the thermometer any time you need to, whether it's for window cleaning or you've changed your preference about where you'd like to hang it. This thermometer is so versatile, it could go from home to motorhome to boat Size: 7 1/4 diameter. Fits all standard windows.
