If you want to open your windows in the warmer months, you'll need to take it off. Otherwise, sunlight and normal stress can also make the tape fail eventually. For a good seal, it's probably best to re-apply them every year.
Overview
Material : Plastic
Brand : Frost King
Color : Clear
Size : 9-Pack
Product Dimensions : 7.5"L x 42"W
Installation Type : Peel and Stick
Ultraviolet Light Protection : False
Number of Items : 9
UPC : 077578022598
Global Trade Identification Number : 00077578022598