How do 3M Low E Window Films work?

3M Low E Window Films work much in the same way as the sun control window films except that they offer an increased performance against cold weather heat loss.  The patented construction of these window films enables the metal coating to reflect more of the interior room heat back into the room where it is needed.  This improves personal comfort by reducing cold spots near windows and can help save on fuel costs, especially in commercial buildings.  These low-e window films are also protected with a patented abrasion resistant coating for long-term durability and maintained appearance.