Megnet Seal for Outside of Window?

[ballanda]

Is there a product like the magnet seal that is suitable for use on the exterior side of the window?  I have a nice flat surface on my outer window that would hold it up perfectly.  But I don't know if that makes sens, or if the product will hold up to the elements.  Thanks!

[Randy S]

You would just permanently install the acrylic with out using the magnaseal kit.
Same principle.. the greater the air gap and air tight seal and you will achieve a reduction.